It's kind of a vicious circle. I wouldn't even play videogames (something I enjoy very much) if I had a girlfriend because I would value the relationship and time spend far more.
But at the same time it was pretty much impossible to find a partner while living such a life. No one finds you attractive. Maybe good enough for one night, but not for a relationship.
People say you shouldn't rely on other people to provide you happiness. But a relationship would have added so so much to my life.