I care about having access to my games 20 years from now. I've been playing more older games for the past few years (most of them were released 20+ years ago). And I want to be able to play games that are being released now and that I have missed because I was playing older games. It's a normal expectation.
It was a royal pain in the ass!
You had to inset the disk every time you wanted to play game. The disks got scratched, destroyed, or rearranged by the wife.
Steam has saved me from all of that. Plus I can share my whole library with my family members.
Sure I might lose access to them all when I die, but 20 years from now who is going to care?