DVDs are superior to online streaming for a number of reasons:
You own it in a way.
If you have a region free player you don’t have to worry about geo-blocking.
You don’t have to worry about the film being removed from the streaming library.
You get special features on DVDs.
It’s offline, so you don’t need to be reliant on the internet.
I have over 600 physical movie/TV releases across 6 formats (8mm/VHS/Laserdisc/DVD/Blu-Ray/4K) and 103 years of cinema history (ranging from 1916’s Intolerance to 2019’s Doctor Sleep) because I don’t trust the studios to keep original versions of films or controversial titles on streaming services.