I wouldn't say Romans didn't care about Christianity....They kind of eventually spread it over the entire Roman Empire, but I think I get the jist of what you are trying to say, so I will let that one slide.
Jesus was a good man. To the poor. He didnt really like the rich too much, but who does?
Eye for an Eye? I thought Christianity was about turning the other cheek!
PS:
The Roman "religion" before Christ was Polytheistic, meaning they didnt just worship Jupiter. I know, I know, you were just trying to make I point. A very illogical point. But a point nonetheless.