This has been such an interesting thread to read! Really hard to get my thoughts out on this one, so what I've said probably makes no sense
My parents are religious (Anglican), and I went to an Anglican high school, however I'd say I'm firmly an atheist. Up until the start of year 7, I sort of just went with the flow and accepted religion. I never really engaged with it, just sort of took it at its face value I guess? But in year 7, when we actually started talking about religion in classes at school, and I discussed it a bit with my friends, I just sort of realised that it really wasn't for me. I didn't actually have any belief. This has sort of progressed over the years, and I feel like I get less and less spiritual as the years go on

I haven't had any experiences that make me reconsider. At my grandmother's funeral last year (at a church, as she was religious), I didn't feel a deep connection with anything ethereal or anything. I was glad that she was religious, as it gave her a sense of comfort and purpose, but religion provided me with absolutely no comfort.
I don't feel like I'm missing anything by not believing in a higher power. I don't feel a sense of deep significance, I just feel connected to the here and now, if that makes sense.
That being said though, having had a religious education - I can see the good messages that can be taught through religion, like all the stuff we learnt about in RE was about acceptance, and love, and all that. All the chaplain's messages were positive, there was never anything hateful. So like, the principles are great. And maybe the fact that I try to live my life to be as accepting of others as possible, and kind to people, and helpful, means that I kinda follow them. I just don't engage with them on that next level haha.
I just think you're being a bit of a shit bloke for not being a decent person - being a decent person sorta seems like one of the main underlying principles about all this, but I reckon it's something everyone should do. Yeah.
And I'm glad for the purpose being religious gives people in life (provided that's not a negative purpose, of course). Which is awesome for them
It's just personally not for me.
I'm really sorry if that was quite pessimistic haha