I think that's the reason still there are millions of BTC that are still missing cause of lost key or dead Bitcoin holders too.
I quite agree.
can this make us happy? because the more bitcoin missing, the less supply we will get, so the price will be higher if many demands. This theory may be used by rich people to send their bitcoin to Op_Return or burn the backup. So if love bitcoin and our family let's bring them to know how to access it before we die.