Coincidentally, there's a post discussing post-college friends which ties into this. I'm basically 30, no friends, no fun experiences in my 20s. Never dated. I'm in nursing school and people have made friends with many of our cohort and I don't even recognize people who've been in class with me all these semesters.
I've always felt like I'm standing behind a glass window watching others interact, talk, and socialize and no matter what I do, I'm always behind that glass. it may be because i'm male going into a pink field but this was the case in high school and college. I only had "friends" in high school because one person was extroverted and we kind of clicked.
I hope this doesn't break the rules, but I can't see myself living to the end of a natural life like this. I'm a loner, socially anxious and introverted and I hate not having friends. I know it's so popular to brag about, but I hate it. I'm a grown man and am at the point of tears from the loneliness and depression.