I feel like we have heard these things from you in the past...but I could be mistaken. Did you ever get your drivers license? How about a job?
That said, I would, in your shoes, join the Air Force, unless you have a bad record. You can immediately get out of that town, learn new things, meet new people, and move on. They will pay for you to get educated, and you should have money saved when you get out, if you aren't an idiot.
P.S. forget the writing thing as a source of income, get a real job, and do that on the side. The bigger question from me: Why the hell are you still there at 21 years old?
My wife and I have no plans to have children. We were very upfront and honest about this when we started dating. However, the rule states, that if one day either of us decide to have a kid, the other will accept. We will probably end of adopting if we do anything, but I wouldn't rule out not having any. We just have big dreams, and I'm not sure that kids fit in them.