And where exactly do thgose expectations come from? At the very least in part?
Some is that parents naturally expect their children to go on and have children of their own.
In part religion can reinforce that, but that expectation is still there, even without it.
It's as much in society in general, regardless of religion.
It's what the expectation in society is, pretty much.
It's just being gay is just a bit different, and a bit different can just require a bit of adjustment.