Theism is literally childish

[Whateverist]

I won't lie - I find other people's reliance on a 'greater power' to be, at best, strange.  It doesn't make sense to me at all, on a fundamental level.

I find that interesting. One of the advantages I find in the religious mindset is precisely their apprehension of an interested and sometimes helpful higher power. Of course you did say "reliance on" and wherever it amounts to that, what utility there may be otherwise is more than offset by the self abnegation. But god belief is not required to enjoy this advantage.

I don't 'get' worship.  At all.

Neither do I. In terms of respecting/appreciating the gifts of the unconscious mind, fine. But I see no healthy way to construe that as 'worship'.

Regarding Matilda, I don't agree with everything she wrote.  That said, especially in the US, many theists use their religion as a way to punish others, or to deflect blame.  That's where her talk about responsibility comes in.  I mean, even in this section, we have Christians admitting that what happens in the next world is more important to them than in this one.  And to an atheist, that's 100% crazy pants.

Yup.

Moreover, the story of Christ is immoral to many of us.  The sacrifice of another in order to offer us a path to salvation because of something inherent in us (sin) which is woefully defined, and, really, shouldn't be something such a powerful being should be affected by.  If I've done anything wrong, then let me be judged, let me pay restitution.

Yeah, but only if you take it literally. Just because they do, I don't think it makes sense for us to foist literalism on what is better taken as metaphor.