I have a Topstone with 105 discs, as well as a Chinese carbon with 105 rims brakes. I pretty much never ride in the rain (unless I accidentally get caught out) and avoid wet roads. There is functionally no difference between the 2 braking systems in good conditions. The singularly different advantage to a disc equipped bike is I can run much wider tires, up to 44mm, where as I would never be able to get a tire that large past a set of rim brakes. So discs are great for gravel and endurance bikes.