You're really getting exercised about something that I never even said.
I have never once said that I deliberately ( as you claim) exclude anyone who hasn't been to university from my social circles. I'm sure it's true that there are many interesting people who haven't.
I simply said that I don't know anyone socially who hasn't and given the types of people in my friends and family groups I would be highly unlikely to meet anyone who hasn't.
That's why I said I feel they are alien to me.
As someone with 2 degrees you can presumably see that those are two completely different scenarios.
A pp said that her social circles comprise solely of bar workers, shop workers etc and she only knows one person with a degree. Whereas those types of jobs are done by students in their holidays in my circles, no one has that type of job after graduating or makes their living doing them.
People are different but you don't seem to realise that. I hope you're as vitriolic towards people who don't know anyone with a degree, and tell them they're missing out on swathes of interesting people, as you have been to me when I say that, by the life circumstances I find myself in, that I don't know anyone who hasn't.