I also had doubts about many things, but I had to find out the truths about those doubts before I chucked out the bible. Many seem like they gave it up without really knowing why they gave it up and all it took for them was to find out the WTBTS was a hoax.
Understand, Your Green and Reverant Claymationess, I didn't reject the Bible based on the Watchtower's interpretation of it. I rejected it based on what it says. Granted there are those that "believe" the Bible, but reject portions of it as stories or myth. I couldn't truck with that, since how would you ever decide which was which? Its value comes from the fact that it is wholly believable. If it's a piecemeal thing, with no way to know which piece is which, then it's worse than worthless.
I was bothered a bit by the fact that all those Messianic prophecies were out there, so I did research that a bit. What I realized as I looked into them was that these alleged prophecies were actually just snippets of scripture that didn't point to a messiah at all. Just statements about a guy, or a child, or a leader, that were later pointed to as "prophecies".
For me, hitting these holes in the Bible was like seeing the zipper pull on Bigfoot. Once you see it, and you look it over and confirm that yes, it's really a zipper pull and it's really attached to a line that runs down the length of the leg, you just can't go back to believing that the creature you're looking at is Bigfoot. It's a quick realization, but it isn't a "hasty" one.
Another way to look at it: Imagine a locked box that you're told contains a huge diamond. You shake the box now and then, and you hear it knocking about. You KNOW it's a diamond. Everyone around you says so. Your whole future is based on the fact that one day the box will open and you'll sell the diamond and live forever on the proceeds. Then one day you do an xray of the box and clearly see inside, not a diamond, but a horseshoe. You recall wondering why it seemed when you shook it that it sounded so oddly shaped. (It also becomes clear why you were always told NOT to xray it!) You realize your faith was misplaced and in virtually an instant, it's gone.