This is the one mainstream religion that I have personal experience with, experience that doesn't come from a book or conversations with other people.
To me it seems a rigid system that is designed to discourage free thought while at the same time claiming to be based on free will. Based on a "book" which is supposed to be the "word of god", people seem to use the book as an arguement for or against anything that they see as different. The book, however, was written centuries ago, by several different writers, in several different languages, translated and re-translated countless times by countless people. Compiled and editied by committies with entire chapters rearranged or left out completely at the whim of a few powerful men.
Today, it is used to bludgeon those who don't agree with it despite the obvious errors and blatant contradictions contained within. I cannot count how many times I've been told to "read the bible, then you'll understand", and when I say that I HAVE read the bible I'm told that I didn't read it with an open mind. I don't even bother to reply to that with what I think each time, but here it is. I was 9 years old, and honestly, passionately seeking "god" when I read the bible for the first time (KJV). How much more of an open mind could I have possibly have had. And please don't say that I was too young to understand, I understood perfectly at that age, and even had indepth discussions with an english lit. prof. who's class my mother was attending at the time, leaving him astounded at my level of intellignce.
There are good points to Christianity, many of them. It is a faith system that works for many people. It is intended to teach compassion and humility, generosity and tolerance. It doesn't work out that way all the time, but many of the best people I know are Christian and I wouldn't change them if I could. It is a source of guidance to many people who would otherwise be lost, a source of moral teachings that some cannot seem to find elsewhere, and system that seems to draw people together, out of their loneliness into a sense of community that would otherwise be lacking in today's society.
Many of the problems of Christianity could be avoided or nullified if the "book" was taken less seriously. Yes it is a good source of moral code, but it is only a book, in my opinion, even if it was "inspired by god", and it should be treated as such. Use the stories within to teach valuable lessons and leave it at that. Stop picking and choosing which parts you like and ignoring the rest. It's a contradiction. If one part is the "word of God" than the whole thing is. I think that is the one major flaw of Christians and Christianity in general, (aside from the fact that many Christians say, "read it with an open mind and heart, but this is what it means and if you see something different you're wrong") they, and it seem to believe that they are the only authority on spirituality and the mind of god, yet god has not spoken directly to any of them in almost two thousand years.
Isn't is possible that the message has been distorted since then? Changed from the original meaning? Even if not deliberately, it only makes sense if you really think about it.

Anyway, that's my rant on Christianity, thank you for your patience.