What is the point of philosophy? Intellectual masturbation doesn't measure up to the real thing, so I'd advise against too much of it, just in terms of pleasure received per erg of labor.
Re: The Sciences vs. Philosophy
Is it the case, perhaps, that when philosophy spun off its various proto-scientific businesses, that a fair amount of philosophical practice went with them?
After all, it has been the case for quite some time that science has labored to find the truth about various things, like 'the cause of disease' or 'the motion of the planets'. True, they didn't arrive at any truths immediately, and neither did philosophy. But the search for [at least some of the] truths which philosophy embarked upon was achieved in its spin-offs--like biology and astronomy. Girolamo Fracastoro in 1546 published a work on "contagion" in which he discussed cause and effect in disease. He wasn't exactly on the mark with respect to specifics, but he did correctly theorize that disease was caused by agents, of some kind. He didn't know what those agents were, and it would take 300 more years before Pasteur, Lister, and Koch (et al) nailed down "germs" (bacteria) as the cause, and 20 years after Koch, viruses were identified as a cause of disease too.
Yes, very workmanlike labors were required. We knew what bacteria looked like (since the mid 1600s, a century after Fracastoro). Antonie van Leeuwenhoek made his own lenses (a skill he learned on his own--he was otherwise in the cloth/clothing/drapery business--which enabled him to see these "little beasties". He can't be faulted for not theorizing his way to the little beasties being the cause of the boil on his backside. That would be a leap too far. Koch (1876) published his Postulates in which he formalized how to identify the bacterial cause of a disease.
Viruses were discovered by passing the juice of diseased tobacco plants through porcelain filters and applying the resulting fluid to healthy tobacco plants. Voila! Bacteria left behind, something disease-making passed through. Tobacco phage virus discovered. Sounds simple, but some deep thought preceded the experiment (which probably didn't work the first time around). Soon after biologists discovered that a cancer of chickens could be caused by a virus too. Then they figured out how vaccinations worked, and what other diseases were caused by viruses (like chickenpox, smallpox, mumps, measles, herpes, etc.
You already all know about the WHO, WHEN, WHERE, WHY, AND THEN-WHAT of the motion of celestial bodies.
Less happily, but nonetheless impressively, the line of thinking which led to e=mc2 and on to the big KABOOM! in the desert of New Mexico required depth of thought -- deep deep depth, not just a shovel or two sized hole.
Yes, separating U235 from U238 was tedious workmanlike stuff involving very big magnets, Milled uranium ore—U3O8 or "yellowcake"—is dissolved in nitric acid, yielding a solution of uranyl nitrate UO2(NO3)2. Pure uranyl nitrate is obtained by solvent extraction, then treated with ammonia to produce ammonium diuranate ("ADU", (NH4)2U2O7). Reduction with hydrogen gives UO2, which is converted with hydrofluoric acid (HF) to uranium tetrafluoride, UF4. Oxidation with fluorine yields UF6. During nuclear reprocessing, uranium is reacted with chlorine trifluoride to give UF6: U + 2 ClF3 → UF6 + Cl2.
All very workmanlike.
Chemists began theorizing about how atoms and molecules fit together and interacted long, long before they would ever see anything like an electron microscope image of atoms or molecules.
Philosophers asked "what is matter?" Chemistry and physics provided the answer. Philosophers might not like it that we now know that a brick is made up of molecules and molecules are made up of atoms and atoms are made up of sub-atomic particles like the Higgs Boson, and perhaps...
Philosophers asked "What is "mind" and where is it?" It seems like a waste of time for philosophers to now diddle around with speculation that maybe mind is somewhere else other than between the ears. We know, for a fact, that if you start scooping out bits and pieces of the soft, fatty gelatin-textured, grayish pink brain, the "mind" starts going haywire in short order. A scoop here, and the person can no longer recognize language. A scope there and the person can recognize, but not generate language. A scope back there and vision begins to dis-integrate. The unfortunate subject might start seeing horizontal lines instead of whole images. Snip a bit of the brain stem out and the person will be unable to wake up -- since that little snipped piece wakes us up in the morning and puts us to sleep at night.
Keep scooping out bits and pieces and before long the mind, and the person who was represented by it have disappeared forever.
Maybe ideas exist in the ether and maybe we get our bright ideas by intersecting with a cloud of potent abstractions floating about, but if philosophers can't come up with some sort of evidence of the truth of that idea, then they should follow the practice of their workmanlike offspring and dispense with the idea altogether.
Philosophers search for truth, and Philosophy spawned the means of finding at least a good many truths. "Truth" itself is a nonentity like "Good". Nowhere in the universe is there a pile of "truth" and "good" waiting to be discovered, so stop talking about it that way.
Some things remain open to useful discussion. What is a "good life"? There isn't any final answer to the question, because it depends on the specifics of one's situation. The richest people in the world have children. Bill and Melinda Gates' children face a different "good life" problem than someone who is born with quite average intelligence, no inheritance, and no bright opportunities spread before them. Both groups of children can live lives of extraordinary goodness, but the details of their lives will be very different.
"What should I do?" and "What is it reasonable to hope for?" are also fruitful topics. Everyone benefits from thinking about what actions are meet, right, and salutary. People are well advised to NOT hope for a lottery win. Not only is it immensely unlikely, but it often brings little happiness to the winners, who are not at all prepared to be millionaires. (I'm ready, willing and able--with plans for spending $100 million--after taxes--but I never buy tickets, so... it's not very likely I'll win.)