I think people expect it because that's what we've been told for so long that nobody bothers to question it along with other societal tropes like "having childr

I think people expect it because that's what we've been told for so long that nobody bothers to question it along with other societal tropes like "having children is the greatest experience you can hope for" or, like we tell kids before eventually telling them they need to find jobs, "that you can do anything you put your mind to".