30s going on 20s

single and living alone is not a normal place to be at this point in my life. I find myself involved in juvenile activities from which I would have moved on had I married and had a family. I spend an unreal amount of time watching tv or surfing the web. I play online games. I still kvell over my nieces and nephews and babysit or take them out to be helpful to their parents (my younger siblings). While none of these things are negative in their own rights they just add to the feeling that I am doing things generally reserved for college age kids.