The only reasons I would do it is 1. value 2. not sure you are going to stick with it.
I bought my mountain bike used because I wasn't sure about doing it. It was about 1/3 the price new but the girl has used it to commute so it was a little scratched up, otherwise pretty decent shape. After a few months of mountain biking I am glad I went this route, I enjoy mountain biking but still am happy to have not spent $700 right now. I did have to pay for a deluxe tune up which the bike shop we use includes free 2x in the first year. The bad thing is to get a decent bike you spend almost as much as a new one, at least here.
A new bike you get a good fit, you know how many miles it really had, you usually get some sort of free maintenance, you get a lot easier to deal with warranty. I have dealt with a cracked frame and good luck getting it replaced if you don't have original paperwork, most manufacturers want that.
ETA- I should say I ride a 47 frame so people know they are only going to fit a small woman and price accordingly knowing there won't be 10 on Craigslist that day.
Last edited by Aggie_Ama; 03-18-2009 at 11:25 AM.
Amanda
2011 Specialized Epic Comp 29er | Specialized Phenom | "Marie Laveau"
2007 Cannondale Synapse Carbon Road | Selle Italia Lady Gel Flow | "Miranda"
You don't have to be great to get started, but you do have to get started to be great. -Lee J. Colan