I got my first RAZR through Cingular just over 2 years ago and have 4 now. The first one, I dropped too much and it quit working. Sent it in and said I had no idea what had happened. Motorola sent me a brand new one free of charge.
Second one, I was playing with the software using a computer program, when my computer crashed. I lost half the software files on the phone and it was as good as a brick. Told insurance I lost it and got another one. The other two were given to me, broken, by friends.
The two most common breakages I've seen are the hinges shifting and breaking the screen cable. The other would be the keypad ceasing to work. Both are pretty easy fixes with a few dollars worth of parts.
The usability of the phone is great, real easy for anyone to figure out. Takes okay pictures for a 0.3 MP camera, same with video. I like being able to bluetooth ringtones to myself from my computer. I know some phones, the only way to get them is to BUY them. Who does that?!?!
Anyways, I wouldn't suggest this phone to a beginner, as it takes a little babying, but it's a great phone as long as your not rough with it!