I spend so much time on my own, that it will be depressing to see everyone with people they know, not seeing anyone I know/chatting to anyone and then going home by myself!
Take the opposite approach and enjoy your own company.Not everyone in groups find it enjoyable.Firstly, if you are a bit tight, you are constantly worrying if you are going to have to buy the others drinks etc. No one is looking at you just enjoy it.