Disc brakes are a must-have for me on a bike now. They add a tiny bit of weight, but the performance difference much more than makes up for it. They stop fast

Disc brakes are a must-have for me on a bike now. They add a tiny bit of weight, but the performance difference much more than makes up for it. They stop faster, but they're also much easier to modulate, and their performance doesn't change when it's raining, so for real-world riding (I frequently get caught in the rain where I live, and I ride my normal bike for commuting and shopping) it's a huge safety improvement. There's no way I'm going back to rim brakes. In the future, I expect to see some improvements with disc brake hose routing. They're hydraulic, so they don't actually need to be straight like mechanical cables, so this would enable a lot of changes that can't be done with old-style cables, much like electronic shifting allows changes because it uses electric wires or even wireless comms.