I'm with you 100%.
I am one of those "resisters" who still buys DVDs and only recently even started considering Blu-Rays.
I like Netflix enough, but for instance, they took the original Cosmos out of their lineup just before the series reboot - no warning, just FOOM... "HEY! I was WATCHING THAT"
I was also catching up on season 7.2 of Dr. Who ... Concast had them free OnDemand just around the time of the big seacon finale..to get folks caught up.
Except when I convinced my partner that it was ok to watch again because Amy Pond was gond (she HATED her so much she stopped watching) ... and we decided to have a Dr.Who catchup marathon... And it was gone.
The only way my DVDs disappear is if I'm stupid and loan them to friends (never again)... Yeah, I risk losing them physically, but that's why I stick with DVD - because I can easily make backup ISOs in a reasonable time and can store my whole collection in case of disaster. (Yeah, drive space is cheap, but Blu-Ray takes up SO MUCH more space)
Anyway, agreed... unless my physical DVDs are lost/stolen/damaged, I can watch/rewatch whenever I want without worrying whether some lawsuit /dispute over rights caused some jerkbag publisher to remove the stream.