My bought new 2002 Golf GLS TDI got hit in an intersection in my native San Francisco in 2009 and the front end was ripped off from right to left . CSAA /AAA deemed the car in such good condition that they repaired it, even though the cost of repairs were less than a thousand dollars below the write off value. Repairs were $10k +.
I new an outstanding body shop that focused on European cars. They realign the engine compartment and repaired a bumper mounting bracket. One new fender, new hood, and all new parts forward of the radiator. The car drove straight and true after repairs. Only the paint, a metallic beige, was the give away, if you looked very, very close to the surface, that the car was hit.
We sold the car at 178k miles four years later when we moved out of state to a person that wanted our TDI real bad. They paid full market price knowing it had been hit and repaired, as we were the original owners and they approved of the body repairs. It still had its original clutch too.
I had a perfect Audi 4000CS quattro in the mid-late 1990s that was t-boned on the driver's side by a 3/4 ton Chevy pick up. The B-pillar and the doors on the driver's were pushed into the passenger compartment over 100 mm. The roof slightly buckled. AAA wrote it off. I sold the wreck to a VW /Audi salvage yard and the owner rebuilt the car for his son.
The Golf's damage and repairs were in the end not as major as they looked. The Audi, in my own view was totaled. I would not have kept it as I would not want a car hit that hard, even repaired according to Audi's procedures or not. AAA sent me a check without even bringing the idea of repairs up for the Audi.
What to do is really is what works best for your needs verses the value of keeping the car. Good Luck!