Just a little advice, go to your community college and sign up for the CNA program mine only took 3-4 weeks. This will give you a little taste of what it's like and see how far you really want to go....
I'm so glad you posted this! I'm 30 and starting my pre- req's and have been wondering this same thing. I know it's silly but I've put it off for so long that I thought I'd be the oldest in a class...
I'm working full time, and trying to get all my pre-req's done. It's hard because you do feel like you have no life, but if you manage it right you can have at least one day of not having to worry...