I don't think there's anything wrong with not having kids. Like others have said it's a life long commitment.
After all where do you think your adult child will turn if they can't find a job or can't afford to pay the bills. These days it's not unusual for 23 year olds to still live with their parents.
If you think of everything your parents have done and the security they gave you, could you give that to someone else?
If you feel used to having someone tell you what to do and be the one under authority then maybe one of the main reason's is that your still young and haven't gotten to that point in life yet.
Right now, I can't see myself ever having children though I do love being around them and getting to see them experience everything you did at one stage.
I've met children who have annoyed me though I've met others who are looking for authority figures and someone to look up to and being able to help them develop their interests and talents I find very rewarding.
Sorry I'm no help, lol.