What's the purpose of philosophy? I'm just going to ramble here.
I have read Wittgenstein many times, and think his metaphor of throwing away the ladder once climbed upon is apt here. Namely, that we do philosophy because we feel disenfranchised in some way in regards to the hand that life has dealt us. Plato, whom I regard as one of the greatest philosophers, would not have been so great had his best friend and father figure not been put to trial and eventually his death. The Stoics would not have been known to this day had they not felt anxious or even depressed about what is or isn't under their control.
I'm not going to name any names; but, a very large population that inhabits this forum and the previous old PF have had emotional issues. I can somewhat confidently say that philosophy has been a coping mechanism. However, I'm at a point where, as the fly stuck in a bottle, I have come to the realization that I feel like a hamster stuck in a wheel.
To try and answer my own question, philosophy has allowed me to appreciate things much more than usual and not take things for granted. So, hence my aesthetic appreciation of arguments, the Platonic forms, and logic, which I still struggle to understand. A large portion of my interest in philosophy is an undying sense of curiosity and wonder about 'things', the world, and other people. This is to highlight the positive aspect of philosophy instead of the pessimism and absurdism I have encountered to a great deal in my dealings with philosophy.
Perhaps, that is then the purpose of philosophy. To appreciate everything around you and not just dwell on the unhappiness and sadness that happens in this world. Of course one can dwell on such matters and write about it; but, for how long can one obsess over injustice or unhappiness? Perhaps I'm being in my own way somewhat selfish here; but, the over examined life is or would be an unsatisfying one to go through.
One prominent quote that stands out in my mind is that philosophy is one step behind religion. That is to say, that philosophy is the stepping stone towards embracing religion or the "mystical".
I'll leave it at that.