Disclaimer: I have severe social anxiety and show signs of autism.
Genuine question. Why do people have friends? What is the reason, and why as a species do we seem to need them. I find the concept of friends strange, as how can you trust what anyone other than yourself will do. Surely you will end up hurt. And is asking others to invest their time in you is selfish?
Saying all this I have no friends and do feel lonely. But can't bring myself to trust others and wouldn't know what to do with a friend if I had one.