Your dilemma runs deep and, IMHO, undercuts almost everything else we can talk about on this or any forum. I, too, come from a background steeped in strong religion, and I have made the tortuous journey you now appear to be on. When I finally broke free of the fetters of faith, I vowed that I would never climb a pulpit and become part of the problem.
Live and let live would be my shibboleth. However, I am touched by the feelings that are probably behind your words, and I must break, (or, at least, ruffle), my promise to myself.
Most Christians, (and many who have other gods), will say that you cannot beg the question with god. His/Her answer to you is whatever you now have, no matter how unsatisfying or poisonous it may be. Pain, injustice, terror, doubt, or illogical self-contradiction is all just a matter of His Inscrutable Will. Christianity and it's fellow faiths survive because they have learned the "right" answer for absolutely everything. That it doesn't always make sense is quite irrelevant. Faith overcomes everything -- including fear and common sense. It is, argueably, the most powerful force within this species. I do not know if faith will save us, but every day on the news I am reminded that it certainly has the power to destroy us.
My advice to you is to not be afraid. You are not falling into a terrible abyss. You will not turn into a devil-worshipper or a drugged-out libertine. You are actually on the verge of having a great leaden weight lifted from your shoulders. You may lose some friends and you might frighten a lot of people who are close to you, but they'll get over it when they realize that their god isn't going to strike you down on the spot. You might be very uneasy and frightened yourself, at first, but you'll get over that, too.
If you are (or were) a Christian, you might be very interested to look here:
http://pages.ca.inter.net/~oblio/home.htm
It will lead you to some enlightening places. Make sure to look at the short list of links and read the reviewers comments. And take heart! You may be all you've got, but, by god (pun intended), that's all you need!