I don’t race ever and I ride my bike every mile as spirited as my (sometimes feel like a noodle) legs will allow.
I look at the introduction of disc brakes to cycling almost in the same way I look at the introduction of indexed shifting. Once I rode a bike with indexed shifting (it was even downtube mounted) I never ever wanted to go back to non-indexed. It started a sea change to cycling sophistication, and try to find a new bike now with the old friction shift system.
For me me it was the same thing when tried hydraulic discs, I loved them instantly and I was amazed the technology had been developed for bikes. It doesn’t matter to me that I’m not descending a mountain at 60 mph, it’s just a much more sophisticated and effective way to stop a bike, which if you think about it a second, is pretty darn important no matter what kind of riding you do. Everyone should do as they want, but my money is going to be spent on bikes with discs.