It's not about convenience breh its about discovery. It's the idea of having to get off your ass, go to a store, and just walk the aisles and sometimes have no clue what you were getting. There's a thrill to that shyt as opposed to going through netflix or amazon or hulu and seeing ratings next to stuff and having them suggests stuff for you. In a video store, I'd get suggestions if I asked but for the most part, it was me on my own with nothing but a box to look at and hope I picked a winner. The one click shyt is cool but I'd argue it makes us less adventurous, less social, and leads to us all becoming the borg. A freaking hive mind with no original thought
Also, there are a lot of gems that aren't even available on blu or digital yet, especially if you're into horror.