So many times I've looked up a movie on streaming and Netflix or Hulu don't have it, or they used to but not anymore, or its locked behind a second paywall (already pay for Hulu, but buy the Starz add on to watch!) Or they only have the sequel or whatever.
Amazon Prime will usually fill in the gaps... at 4 bucks to rent and 10 bucks to own, just like a DVD, and I still have my library of those.
Plus my own experiences being deployed to sandbox, if I wanted to have my movies, I'd better fit all my DVD into CD wallets (or at the very least spend a few hours burning them onto a TB external hard drive) which isn't really doable with streaming services.
I'm explicitly buying computers with CD drives (practically have to special order thise nowadays, even gaming rigs don't usually come with those built in as standard) and the PS5 that still has the physical disc input for those reasons (which will also double as my DVD and Blu Ray movie player)