I had this same dilemma in another life. I really wanted to get an M3 and I lived in Germany at the time so I could get a US spec M3 for cheap. I could semi-afford it, probably more so than you in this situation. It was sooooo tempting. What eventually deterred me is how paranoid I'd be with the car. I'd be worried about scratching her up or having her stolen or some other shit. I also didn't have a garage so she'd just be exposed to the weather and god knows what else out there (if I were in the US I'd be a lot more worried about it).

I just realized it wasn't worth it. As someone else said here, the mental relief/satisfaction of being in a good financial state AND not worrying about a car of all things is priceless. I ended up getting a Volvo, travelling to Sweden to get it, and vacationing with it for a few days before bringing it home. Good times and absolutely no regurts.