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

[Belacqua]

Generally speaking, is philosophy a worthwhile subject of study?

I'd say that this question is a part of philosophy. So if anyone sees fit to answer this question, they are doing philosophy. Anyone who took the time to answer, has tacitly answered "yes." 

Any discussion of what it's worthwhile to do is a value question. It can't be answered by science. How we should spend our time is a part of the question "What is a good life?" and that is the basic question of philosophy.