Couple misconceptions since I daily and have two high end Audi's I posted above (RS7 & R8). Yes they can be expensive to repair but the newer cars are not like the older ones. I've had minimal hiccups in either car they've been pretty much problem free. Plus you have a warranty. Secondly, buying any significantly older car (8+ years) of course things are going to wear down and it'll cost to keep the car running optimally. Do you expect a part on a 100k car to be the same as a 20k car? It's of course going to be more expensive to repair and maintain. That's usually the primary reason for their resale to tank as they get older. Get in cheap but you'll pay to keep it running.
As for not daily driving because of it getting "dinged or banged up." There's a risk any time you take any car out something can happen. However, it's just a car, and I bought it for my enjoyment. Unless you bought an F50, P1, or some stupid ultra rare/expensive car that has the potential to appreciate you're better off driving it. It'll lose value just sitting there over time. Rain or shine I take my cars out. Life's too short to drive boring cars. My '17 R8 has almost 25,000 miles and climbing. It's been on date nights, auto cross, drag racing, an actual race track (Sebring), and I've taken it on a road trip. The day I sell it I can at least look back and say I enjoyed the heck out of it rather than just looking at it in a garage and wondering if I should have driven it more.
As for a GT-R, the maintenance is not that expensive. I had one for four years. Brakes are the only pricey thing on maintenance. Oil changes and tires are just like any other sports car. If you really are interested in one shoot me a PM I can talk to you about ownership. My previous GT-R is in my profile avatar photo. I also daily drove that thing. Here's a nice road trip my wife and I took it to the Tail of the Dragon (over 300 turns in 11 miles).