[Serious] Generally speaking, is philosophy a worthwhile subject of study?

[Belacqua]

And I was asking for actual philosophical theories that turned into good scientific ones.

And I think your passionate belief that only science is worthwhile is causing you to ignore the fact that philosophy does other things -- ethics, aesthetics, metaphysics, etc., which are not testable by science, but are valuable for human flourishing.

You hold your own metaphysical beliefs very adamantly: physicalism and nominalism. These are not testable by science. Yet you seem devoted to them.

It seems to me that if philosophy doesn't offer anything worthwhile, then your own confidently held philosophical beliefs are not worthwhile. If your philosophical beliefs are worthwhile, then philosophy is worthwhile.