It's very important to have someone help and guide you when you are young. When you don't have that the path is much harder and if you have people actively inhibiting you then things are very much harder and blaming yourself is not helpful.
The optimum size of a human group/family is not one. It isn't two. I'm not sure what it is since I have never been part of one. If the group is undersized yet has few issues or has resources to compensate (helpful community, funds) it may be fine; if it is undersized with many problems and few resources it's going to have a difficult time.