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

[brewer]

I like vanilla ice cream instead of chocolate.  

The point was to provide an example of a philosopher that meets the assorted criteria in thread, while evading criticisms offered in thread, as an answer to the question of this thread.  I don't think that whether you, I, or the housecat like his work is relevant to any of that, but I am interested in why some ideas are non starters for given people.

I notice that you don't reply directly to me. Is that because if I don't reply you think you've got the upper hand?

What assorted criteria? Is philosophy a worth while subject of study (thread title, premise), that depends on the particular philosophy and person(s). It should be obvious, even to you, I don't have much use for philosophy that I don't find valid or have a particular impact in my life.

Would you like to tell me what makes a chair? I'd rather focus on making a chair.