Originally Posted by Gangplank
Umm... because they are foam. How long can they last?
I like your solution but since you asked...
Foam grips last a LONG time. I nearly have 20K on these ones. $7 at Cycle Gear for a set. The only real drawback is after a heavy rain they absorb some water, but truthfully not nearly as much as you would think. Also, the foam helps absorb vibrations as well.