Not sure why you are being downvoted, because it is a valid and important question (even if stated in this somewhat adversarial manner).

For me the promise of philosophy is in examining the deepest assumptions that we use to interpret our experiences and guide our thinking. This is a hard task because just like sea creatures that are surrounded by water their whole lives and thus don't notice it, we don't notice these assumptions and they remain hidden and non-obvious.

Ultimately I feel that current philosophy falls short of this promise. It either descends into technicalities or regresses to a prescriptive "this is how you should think" manual. Probably I am not well-read enough.