Comfort. Immense comfort.
I spend a lot of time in my car. I enjoy the car that I have now (a 2012 Honda Accord EX-L), but the only reason why I didn't take out a lease on something more expensive (like a 535i or an E-class) is because we're planning to move very soon and driving a luxury car in NYC makes no damn sense unless you are flush with money and can afford the inevitable body work.
When I went to Austin a few months ago, I decided to rent a BMW Z4. It was amazing. An absolute pleasure to drive. It wasn't the speed that did it in for me, though. It was the sheer comfort of everything.
Volume knobs? They're RIGHT THERE. You don't even need to move your forearm.
The seats? Plushy and comfortable (unlike my Accord; everything is great, but those seats are terrible).
Cruise control that actually works on downhills and actually slows down? Not a problem.
Me paying a few hundred dollars per month to not drive something much cheaper (and, likely, not as nice/comfortable) doesn't bother me at all. It's a debt, and debt sucks, but driving a low-grade econobox for a few years while I save up for something that will be worth 30% less than what I bought it for the minute I drive it out is much worse (for me).
(Same goes for my future house or apartment.)
That being said, building up my emergency spend and clearing up some debt that I've amassed is next on my priority list after moving.