The bike industry needs to sell bikes and one way of doing that is convincing people that the latest thing is better. Now they're pushing disc brakes and various systems for a cushy ride. Fine.
Like most of the people on these forums, I ride enough to have a pretty clear idea of what I want, what I don't want, and what I don't care about. I don't care about disc brakes. I'm perfectly comfortable with rim brakes. That being said, my next bike (who knows when - I'm happy with what I've got now) may have disc brakes simply because that's where the industry is going. I can imagine a day when non-disc wheels will be expensive specialty items.

I can also see myself buying a disc-equipped touring bike when I retire and have the time to tour. Discs make sense to me for a heavy, loaded bike.

Unfortunately, the things I do care about are not what the bike industry is pushing: threaded bottom brackets, external cable routing.