I collect for many reasons. Because I like their style, because I like the way they ride, because I like to build and fettle, because you are sharing your experience of the ride with those that rode it before, and those that will ride it after.
I have MTB and Road bikes, they are old ( the oldest is 1921) and functional, and built to last, so why throw one away and buy a new one just because....
We do not own them, we are custodians of these machines, and enjoy them while we can.