In the past I struggled with being alone mostly because I couldn't explain to myself why I had such a hard time to connect to others which in turn had a negative influence on how i saw other people because I didn't see how it could be my flaw.
Now I don't mind being alone anymore. Sometimes I choose to not meet anyone for weeks.
I think it's bad for my social skills and of course it has it's advantages to maintain a circle of friends but usually I get bored too fast around people and wish I could do something else after 1 or 2 hours if there's nothing else I can occupy myself with.
Also from what I see is that most people usually don't feel that entertained around others compared to the hype they create around friendship and regular meetings with friends. Most of them seem to do it because they can't be alone and need their weekly dose of social approval.