The more interesting question is: how has one traversed their entire life up to gainful employment and has no friends? This seems to be the more telling question.
A person can be at school and have a small number of friends. They then leave to go to college and lose those friends. They may make a few more friends at college. They then leave college and go to work - and again they lose their friends.
Once you're at work it is hard for some people to male friends.
This isn't a new or unusual point of view. We freqently hear about how lonely cities can feel.
"$cityname is lonely" returns hits of people talking about how lonely they are in any city. The fact that they do this on the Internet makes it, to me at least, very sad.
Some people just struggle to make and keep friends.
I doubt it is the psychology, but the lack of shared experiences outside work. In school you have shared experiences and you grow to like some of the guys you hang out with. You don't hang out (much) at work and so don't have the shared experiences and consequently make no bonds.
Not the OP, but Death is a cruel mistress. Sometimes even a 40 year old will outlive quite a few friends. I'm 44 and about a 1/3 of my graduating high school class of 20 are gone. Of the friends I made in college about 1/3 moved and I didn't keep in touch, and a couple of other died. I never married (that billionaire comment tomcam feels a bit too true sometimes).
I have plenty of relatives along with close friends (enough that getting together to play Arkham Horror is becoming a logistic nightmare), but I could easily, with just a few unlucky breaks or moves, not have any close friends. It isn't even that uncommon.
A person can be at school and have a small number of friends. They then leave to go to college and lose those friends. They may make a few more friends at college. They then leave college and go to work - and again they lose their friends.
Once you're at work it is hard for some people to male friends.
This isn't a new or unusual point of view. We freqently hear about how lonely cities can feel.
"$cityname is lonely" returns hits of people talking about how lonely they are in any city. The fact that they do this on the Internet makes it, to me at least, very sad.
Some people just struggle to make and keep friends.