Rim brakes are easier to maintain, cheaper, and lighter that disc brakes.

Both have their pros and cons, but disc brakes can be a hassle to take care of (bent rotors because of people not being careful when they park their bike next to yours), parts contamination, hydraulic brakes have their own issues.

My only complaint about rim brakes is that rims are expensive to replace, so riding in the winter can get expensive if you aren't on top of keeping things clean.

Stopping power can be excellent on rim brakes, just don't use shitty pads.