I haven't had a disc drive in any of my PC for a decade. I bought a USB DVD reader just in case, it's somewhere collecting dust — I've never used it. Why do you want one in a console?
Like other media, games are going the way of not caring about ownership. They just want cheapest and most convinient way to play new games. Microsoft had a point when the said the future was cloud. They simply underetimated when free money would end and are reeling over that long game.
And anyone that does, they will simply pirate the media anyway. So no loss on their end.
I can buy PC games from gog.com and get something that will work in 20 years. Consoles don't have an equivalent DRM-free store like that, but discs can achieve that.
I've never owned a games console so I don't know, but I thought they could be used to play DVD films. It makes perfect sense as part of their function. ISTM anyway.
Another reason I like it is because I prefer to have my console games on a disc, this way I can share it with friends and I don’t have to be at the mercy of people like Sony who is not afraid to remove access to something you paid for.