I think you are right and you have touched a very important point in philosophy.
This is my intepretation of what happened:
- phylosophical systems of ideas were perceived as lacking a strong basis;
- analytical philosophy thought it found a strong basis in the critical analysis of language and our involvement in it;
- analytical philosophy has actually several issues:
- it is not clear what the difference is between it and science of language;
- there is no strong evidence that language is the best field to get the best understanding of our human condition;
- critical analysis of language is at risk of becoming just a new hidden metaphysics, as to say: we found reality, objectivity: it is language!
- analytical philosophy can’t avoid the human sensation that it is very disconnected from humanity, from real everyday life and feelings, human interest in existential meanings, human emotions, human psichology and relationships.
In this sense I agree with your question: if philosophy carries on going through this way of looking for strong things, then it is dead, it has no reason to exist; science is much better at doing this job.
Philosophy, in my opinion, should instead recover its ancient roots of being a human experience, a spiritual activity, as Pierre Hadot has shown us. It is true that this way philosophy lacks the strength of science, but why should philosophy envy science? Rather, at this point, the problem is how philosophy differs from literature, poetry, art. I think philosophy can be different by taking on the task that traditionally was held by religion. Religion is revealing less and less able to face the criticism coming from people who want to give importance to critical thinking. A lot of people abandon religion, but they don’t want to abandon their sensitivity and interest in intuition, dreaming, transcendence, art. Many of them define themselves “spiritual, but not religious”. Unfortunately, the word “spiritual” is very vulnerable, fragile, because traditionally it is understood as “believing in the objective existence of supernatural, non material things”. But some philosophers are making efforts to recover the word “spiritual” to a secular, or atheist or materialist context.
This way philosophy would differ from literature and art in that it can build on its immense heritage and experience about critical thinking, especially in connecting things to the most general perspectives on human existence.
We could say that philosophy worked so much on “how to understand things” and this made it forget its being an experience more than a science. Let’s leave to science the task of understanding things and let’s restore to philosophy the task of exploring understanding as an existential human experience.
So, let’s discuss philosophically about metaphysics, language, morality, criticism, any philosophical topic, but not with the purpose of understanding it; rather, with the purpose of experimenting the pleasure, the depth, the seductive attraction of exploring connections between ways of understanding and human existence.