If you have to sit through the EMT Basic and/or EMT Intermediate classes you will be bored to tears. Pay attention to the legal aspects, though.
Not all states are "National Registry" states. The NREMT ([url]www.nremt.org[/url]) is quite the racket, really. Kind of like the organization that sanctions the SATs. It is nice to have a standard curriculum that is portable to a lot of states, though. Even if it is a National Registry state, you will still be faced with unique state and local treatment protocols.
I can't recommend it as a living, but it can be tremendously rewarding. I only got involved because I (used to--just moved) was able to volunteer on a 100% volunteer rural emergency service. You can make a living at it if you become part of a full-time, unionized, fire service based operation. Union fire service paramedics make around $40K a year in my area, with plenty of time left over to hold down a second job or business, or just kick back, due to a 24 on 72 off schedule. Not a bad deal, if you can get it--last job opening I saw generated hundreds of applications.