I think it mostly rises from insecurity and societal pressure. We are all taught about what it means to have a life. Get a career, get married, have kids, have friends. It's just a big social construct. A construct that has the mentality that if you're alone, there's something wrong with you or you're a loser or you're depressed. I personally think it's BS. That you're validated solely on your relationship status or your social status. I pretty much don't do s**t. I stay at home, do my own thing and that's it. My friend circle is pretty limited, I only have like a couple of friends. As far as relationships go, I don't really spend much time worrying about those kinds of things because I have standards personality wise. I'm not going to just give my heart to anyone. Insecurity plays a big part in it as well and it intertwines with the societal pressure. It's that pressure that has been so ingrained into our society that it makes people feel insecure when they don't live up to it. There's absolutely nothing wrong with being alone, it's always great to find yourself and do things YOU want to do.