I've not read all the way through the thread yet, but I'll answer #3 (it's the only one worded in such a way that I care to answer). Yes, there is meaning to your life. Whatever meaning you choose to give it. You have chosen religion (sorry 'bout that) while other choose other things. The meaning you find in your religion still comes from you though because the only meaning you'll ever find comes from within, not without.
Thief and assassin for hire. Member in good standing of the Rogues Guild.