I actually wanted my car declared to be totalled so I could have a clean slate and no bad Carfax history to shoulder. After I was rear ended, I had $26,000 worth of damage to my three week old 2013 (no air bags deployed). Trade in value after repairs was a whopping $31,000. I negotiated with the ins co and got a check for the full amount I paid (thanks to the value lock rider - otherwise i would have received about $5,000 less).
Suggest after you get your estimate that you find out what the trade in value would be, post repair. That information may help you make up your mind what you want to do.