In general, it's not a good thing to get sentimental about most of the random stuff we try to hold on to forever.
Yeah, the car you've had since high school might be the location of the first time you made out with tongues, but you're also going to try and drive in the snow in like two weeks and your 2001 Chevy Cavalier's lack of functional ABS brakes will kill you dead faster than you can say "black ice."
This is the tyranny of things; an attachment to items that have no real functional value in our lives, but we hang on to anyway out of habit.