It's all about how you manage your time I guess. I'm right down the middle 50/50 very outgoing, sociable talk to or help anyone. The other 50% I hate humanity and like my own company, happy to be a recluse yeah!
Think a lot of it is due to the aging process, I look at things that need doing and think why? Life's too short and if it doesn't get done today it never will, but sod it, helps also if you become slightly hard of hearing.....