Ah, I see the confusion. I'm Roman Catholic, and we haven't done that 'Original Sin means you can't go to Heaven' thing for a while. So, no, according to my faith, a seven-year-old who was never baptized and thus hasn't had Original Sin taken away is not the same as an unrepentant murderer. I admit that the mechanics around that, though, are very shaky, up to the point where there's a legitimate debate to be had about whether Jesus making himself a sacrifice on the cross is literal in that he's a real blood sacrifice to atone for a real sin, or whether it's more about making himself an example that uses the metaphor of sacrifice and sin.

As for the "things" simplification, I would argue that Adam and Eve were treating God as a Thing in that case. But that could be a massive conversation/debate unto itself that would probably get very snaky, in more than one way. XD

I actually think Christians are starting to get to the same point of the kind of atheist Jewish culture you reference, with things like weddings that people want to have in churches despite never going to church or even having faith/belief. I have a half-sister who had her second wedding in a church for a religion she's never been simply because she wanted a church and the Catholics wouldn't recognize her divorce. Even the concept of a wedding itself separated from spirituality is odd to me; why is there a distinct legal status for a romantic pairing that can't be applied to any other kind of pairing? Why can't any two - or more - people be One in The Law? A lot of culture really needs to be reverse-engineered and questioned, IMO.