I got rid of a 2001 Honda Accord - fully loaded. I owned it and it was paid off. Really for awhile there I wasn't sure I was ever going to get rid of it. I ended up leasing a 2010 Ford Fusion SE with Sun/Sync package. Love it.
What I miss about the Accord:
Sometimes leather, except on hot days.
Responsiveness of throttle (Fusion still has more power)
Honda
No car payments
Seeing those miles climb above 150k and knowing it still had plenty of miles left in it
What I don't miss:
Lack of warranty
Always had some kind of brake or rotor issue (specific to my driving style I'm sure, still)
Car with a lot of miles on it
I'm the kind of guy who likes new stuff. I had been driving the Accord forever and it pained me a little bit to let it go only because I probably could have kept driving it for another 4-5 years, easy. But, when I went to the dealership I told them I wanted something comparable to what I had at the time, and I didn't want to pay an arm and a leg. I stopped into the dealership just to "look around" and they put me in the right car. And I love the look of the car. All in all I was very happy in the end.