Bit of a tangent, and also very much IIRC...
In the US saying "sorry" can possibly be construed as evidence towards admission to guilt of the crime, whereas in Canada there's a "Sorry Clause" of some sort specifically stating that saying that apologizing isn't necessarily an admission of guilt.
As a Canadian I kinda got a kick out that. I live somewhere many people still thank the bus drivers as they exit the bus.
This ^
I make a fair few posts (mostly back on reddit but now I'm here) and I don't do it because I get anything concrete from it. I just like seeing the replies to some of the random shit that pops up in my random-ass brain. (And I enjoy seeing how people respond rather just the content of their responses too.)
I like chatting about certain things, and luckily for me I don't need to create a community because they're already there. But frequently I want to chat about something within that community that doesn't exist, thus, I post. Making a community is just the next step in that.