Op i am going to be you. It sucks.
I haven't had friends since I was 13, and that's caused every problem in my life.
I have ADD and I'm weird as fuck, a deadly combination of weirdness and being annoying that drives people away from me.
Not having friends led to social isolation, and also never meeting girls
Becoming isolated meant I became lonely, miserable, bitter through high school, so I didn't learn how to interact socially with peers, which carried over into college so i basically had the same existence there
All the isolation, misery, loneliness, etc, meant I had nothing to work towards, so no motivation, mediocre grades, shit emaciated body.
Graduate college, move back home, terrible relationship with parents, only child. Can't even get into grad school and work a shit job around other people who are actually successful
Now a 25 year old kissless friendless shut-in (besides work) who has never even attempted to get a girl and now I'm scared to not only try to get a girl, but even friends, because everyone has always hated me so I don't want to burden others with my presence. I've basically been a shut in since I started high school at 14. No life experiences at all. But honestly my virginity doesn't even bother me.
If I try to have "real" conversations with anyone and don't just crack jokes, or try to actually hang out with people, it will become clear very quickly that I have no friends, no girl, no life, awkward corner sitter, the people I talk to will repel from me because of this, and I'll be worse off than when I started.
I'm just grumpy, sarcastic and angry cracking jokes all the time. Can never be serious about anything, always have to make observational jokes or "witty" comebacks.
I listen to the things my coworkers talk about and literally cannot gather myself to care about their lives. I just get annoyed by most people.
I basically just exist and go through the motions of life at only 25 years old, the "prime" of my life.