Do it at the weekends for a bit of beer money and love it. It's great getting to know the regulars and if your attitude's right you earn respect and don't have things kicking off every five minutes.
Well worth having as a buffer in current financial climes - something you can always fall back on if things go tits up with jobs / money etc.
Check out your local venues and the firms that run the doors - if the places are sh*t and the doorman don't seem your cup of tea look for another area.
Ben