My teachers in yeshiva tried to convince me that chassidus (kabbalah based philosophy) explains the ultimate meaning of life and the universe. It pretty much boils down to this (ask a Lubavitcher if you don't believe me):
Q: Why do we and the universe exist?Now, I don't pretend to know the "meaning of it all" (maybe there isn't one), but I definitely don't find the above explanation to be satisfactory (for reasons obvious to the un-dogmatized). And anyway, it's all based on "revelation" (that's the definition of kabbalah) without evidence, so why should I believe it to be true?
A: God wanted to have a dwelling place in a lowly realm ("Nisaveh hakadosh baruch hu lihiyos lo dira bitachtonim"), so he created the world and put Jews in it so they can make the world ready for Him by doing mitzvos.
Q: Why did God want to do this?
A: It was a taivah (desire), and you can't question a taivah (i.e. desires are irrational, and that's that).
I'd rather put my eggs in science's basket, and use reason and evidence to TRY to understand the universe. We may ultimately be unsuccessful, but I find no comfort in pretending to know things I don't.