It didn't die on us, thankfully, but still we had to get rid of it. it no longer worked for us, as our family of four grew to five (plus a dog, two cats and a frog) we were just too tightly packed.
This was my wife's car, so I didn't have the same emotional attachment to it, but i do understand that attachment and the pain of that loss. It's not like the loss of a pet, but it is definitely greater than most inanimate objects because you've done things in them, gone places with them and they are part of a shared memory more than say a watch.
I was a late bloomer to driving and owning cars, so ending that relationship is a fairly new experience for me. In fact the first car that I really owned and used on a daily basis, died as a result of me flipping and rolling it on the Hutchinson River Parkway in Westchester County, NY. That was a fairly emotional departure, but the car after that really surprised me. I had owned it for a year and it had become the third (and unnecessary) car. I gave it to charity and was totally shocked when I misted up watching it get towed away off to become "parts."
That car became unnecessary because we bought the Acura that has now been replaced by a minivan, which will someday become unnecessary or will just no longer work for us or will just no longer work.