I am like this close for taking up Christianity, except that I can't get past the big hurdle of actually believing in Jesus Christ. It just... is not something I have faith in, and that, as I see it, is the end of the story. I find religion fascinating, but I truly don't know if there's a God, and I truly don't have faith that Jesus was even involved. I suppose I'll stay a "fuzzy scientific deist" and go with it.
That said, I occasionally get frustrated by people who get around the "conversion of sinners as moral necessity" thing by claiming that, since Christ was good, to be "good" is to be Christian by default. I find it both offensive (the idea that one could only act ethically, or live by a personal morality, because of a secret, possibly subconscious/pseudo-Freudian faith) and kind of dismissive of Christianity -- after all, isn't faith in Jesus the whole point? While good works are good and all, isn't the main thrust the acceptance of Christ as savior? If you're going to be a Christian, either work on converting those heathens or come to have faith that God judges by something other than faith, because believing in this sort of "crypto-faith" is unbelievably weird.