I rent a lot of DVDs, and a continuing problem is that maybe one if five has so many scratches that it pretty unwatchable.
CDs and DVDs are awesome technology, but come on, it's been over twenty years, how come nobody has invented a disk which does not get scratched if you look at it sharply? Seriously.
Or even just a DVD player, a box or in a computer, which does not keel over and throw its legs in the air in the presence of scratches. How hard can it be to program it to not freeze or crash, but just skip to the next place on the disk which is scratch free?
It seems to be emblematic not just of technology but almost anything human that there are these amazing things, but they always have all those huge, obvious flaws. Weird.