I claim to be a Christian, although I don't practice very often in terms of going to church. I actually liked reading along in the missalettes, as well as recognizing my shortcomings and proactively thinking of how to act in the future.
I'm Christian because I was raised that way. I believe there is a God and Jesus was probably a sort of "avatar"(see Hinduism), and I'm sure there are plenty of other ways to understand the truth through most or all religions. I don't believe Christianity is the right religion and the others are wrong; rather, I think of religions as variously forged paths through the forest that we call this life: paths are created and taken by many different people, but aren't we all trying to get to the same destination?
Religion is hard to talk about, because it ought to be lived rather than just discussed. Like love, you shouldn't just say, "I'm Christian" or "I love you" without following through and acting out such statements. That's why I feel guilty about claiming to be a Christian when I haven't gone to Church for quite a few months.