I have three friends. I live with two of them, and I'm planning on marrying one.
I used to have more, but I was always the group's weird guy. We stopped talking.
The other one I live with can be a bit annoying sometimes, though, but he's a relatively young guy so I toss it up to that.
The other unmentioned one lives a bit away and is very busy as an EMT.
I'm sure people can be happy alone. I like to think in Grok times they were the tribe's long range scout. Not sure it can be done well indefinitely, though.
On the upside, your parents at least care. They just don't understand. Understanding is hard.