Spare parts were small, cheap, and easily accessible too (atleast for my toyota)
I dread being forced to upgrade, not out of disdain for the environment, but the fact that I will spend more money, on a less reliable, less "mine" car, and more something big daddy government wants.
I did own a 1994 Dodge ram up until a few years ago, but it needed new brake lines and there was so much rust coming off the frame I honestly wasn't sure I trusted it anymore, and the cost of the brake lines was probably more than it was worth at that point.