Probably DVD.
Unless I really like them.
At some point I want to drop my Netflix and Hulu probably and have my own personal server. Shows would never leave. And it would have all the shows I want in one place.
Convenience of streaming with the custom library of buying yourself. (And the expense honestly but eh, a lot of those shows aren't on what I have anyways).
Don't think I'll be buying anything physical anymore when it comes to TV or movies, I don't see the point. If they're not on a streaming platform I have then I can just find them online anyway.