No it's not bad at all. Not everyone wants to marry or have kids and they don't have too.
I'm 28 going on 29 and I used to wish to find a girlfriend and marry her and one day have kids. But now as I get to be almost 30 I find I enjoy my single life and don't really want kids either.
Yes they're cute and all but they grow up too soon and then they're out of the house anyway.
I like kids myself, We were all a kid but I just don't want any myself nor a wife.
My mom wants me to get married and have kids, but I really doubt I will.
I love my single life too much and I really don't like being around a lot of people.
I love my own company and enjoy being by myself at times.