Sorry, I'm not going to be able to respond as often as I'd like or as specifically as I like.
To Larissa concerning the verse in Deuteronomy about rape:http://www.answering-islam.org/Shamoun/ot_and_rape.htm
That verse is not actually referring to rape as the website will show. I'm really sorry for all that happened though.
The other big issue was why Christianity is right while other religions are wrong. This would take a very long time to discuss all the many reasons I believe this but here's a very simple answer (I can go into more detail if you'd like me to):
Let's say at least hypothetically that God does exist (I can argue scientifically why he must exist if you'd like but I won't do that this time). If there really is a God, then one religion must be right and the others must be wrong because they are all different in some way. And every other religion (unless there's one I don't know about) is based on works getting you into Heaven. Basically if you're a good person your whole life you go to Heaven/ reach enlightenment and if you're a bad person you go to Hell/ come back as a cockroach through reincarnation. Christianity is the only religion that offers the chance to get to Heaven through grace alone. And this is the only way that being allowed in Heaven makes sense. How good do you have to be to get into Heaven? How bad do you have to be to be sent to Hell? (Christianity is also the only religion I know of where people aren't sent to Hell by God; instead they are offered grace from Him) How can a holy and perfect God accept sinful/bad people into Heaven without a form of redemption? How can your works save you if they are the very thing that condemn you? Most importantly if works are the way into Heaven then every other religion in the world got it right but they all have different gods. So which god is the real god who judges works? But Christianity is the one religion that is different. It doesn't require you to have done enough good things to get into Heaven. It's based on grace. Also, another huge difference is that our God is alive. Justin Martyr (non-Christian extra-biblical author) wrote Dialogue with Trypho
which said that the tomb of Jesus was empty, although he claimed the disciples had stolen the body. Other extra-biblical sources confirm that the tomb was empty. But how/why would the disciples steal the body? There were two Roman guards who knew they would die if the body was stolen and never claimed the disciples stole the body. Then the disciples were all killed for their beliefs (all but one who was boiled alive and then exiled). Why would the disciples die claiming in something that they themselves made up?