What A Bummer !!!

I had a crappy day today...My valiant's alternator gave out 1st...no biggie. Then before I got to change it out in the parking lot at work,...some guy backed into it and creased up my fender right near the headlight. Its a shame to because its the only rust free panel on the car !!!! I am still trying to find out how he couldn't see a LONG FOUR DOOR SEDAN !!! right behind him...Anyway...its creased in two places right on the lip..all most smashed flat...should i fix it or get a replacement ???