I also want to do the sit at home and make games thing. I rekon I'm no less than 5 years away form it. I just have too many family obligations to just up and leave my full time job. Once I've paid off more of the house etc then I can consider doing it.

Take a trip to http://www.indiegamer.com to really get you motivated to do it full time. There are lots of success storeies that you can read about there.