Philosophy is an activity: it is a way of thinking about certain sorts of question. - Nigel Warburton

One important reason for studying philosophy is that it deals with fundamental questions about the meaning of our existence.

Another reason for studying philosophy is that it provides a good way of learning to think more clearly about a wide range of issues.

A further justification for the study of philosophy is that for many people it can be a very pleasurable activity. There is something to be said for this defence of philosophy. Its danger is that it could be taken to be reducing philosophical activity to the equivalent of solving crossword puzzles.