OK, I'll start...
I have a 7 year old Mazda 6. It's a great car, handles nicely, looks not too bad, maybe a wee bit boring (think Mr Mondeo). The engine (diesel) is garbage. Blows smoke everywhere and misfires at 1250rpm. Really must get that fixed...
We do about 3000 miles a year. Take the train lots for longer journeys, as its faster and more fun for the kids.
What car would I really like: Either a T5 V-dub camper, or something small like a BMW concept Mini.
For me, the car is a weekend tool and toy. If I were to use it day-in day-out, getting stuck in traffic, I would very quickly lose the pleasure of driving.