With disc brakes being shoved onto more and more bikes in all categories, repair shops will see the first ripples of a rising wave of rusted rotors and frozen calipers on bikes laid up by riders who had to address other priorities and found themselves storing the bike for months or years.
In some climates the damage can occur in weeks.
Your alloy rims and rubber brake pads won't do that to you.
A customer looking at road bikes the other day asked our sales person why road bikes are coming with disc brakes now. I did not pop out of my lair and say it's because the bike industry thinks anything worth doing is worth overdoing and recount their long history of shoving technology down consumers' throats. I'm not mellowing in my old age, I'm just giving up.
The sales person would not speak ill of any product a customer could be induced to order. And if the customer shows clear enthusiasm for a product, mechanical advice be damned. So I'm assembling the disc brake Roubaix today.
Disc brakes have their place. Their spread to many other places is like the escape of an invasive plant. Those are often impulsively imported from Asia, too.