Why are people so emotionally unavailable when it comes to friendships?

Over the past 10 years trying to make friends, I find that most adults are emotionally unavailable when it comes to friendships. Many people just want coworker relationships to only be at work. I have tried countless times to connect with people (in many different settings), most of which show no interest at all to connect. Even at social gatherings, meetups, people don't commit to meeting up regularly in order to form bonds. At social gatherings, it just seems like most of them just want to meetup to talk for that night only, not to make any lasting bonds. I have even roommate with a guy, who would leave the room mid conversation, because he has something to do in another room. I just think "am I really that bad to talk to?" I don't think so... I think its just people are too selective on who they want to talk to.

Does this current loneliness epidemic all just have to do with the fact that people just do not want to emotionally connect with each other?

Why are people so emotionally unavailable when it comes to friendships?
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