After going through two expensive Magsafe Macbook Charger replacements I looked to see if there was any way to remedy this common problem. The bottom end of the charger is susceptible to breaking after being bent too many times.
I found a quick and easy fix. You will need only some electrical tape for this.
Wrap the tape around the bottom end as shown in the picture and presto. No more bends. It defeats the aesthetics of your charger but beats shelling out the bucks for a replacement.