Personally, I wouldn't want to ride a bike with only rear brakes - or do you also have a front brake with these?

> or do you also have a front brake with these?

No, not necessarily.

I've been using bikes with only rear brakes for years and years as city bikes, and never had a braking problem.

On the other hand, I've borrowed many bikes with conventional rim brakes and invariably had (serious) braking issues because they would be badly adjusted.

I've had cars pull out in front of me, giving me less than a second to stop. A rear brake in that scenario would just skid, and I'd be in a world of hurt. For that matter anything but a pair of high-end brakes would have put me in serious jeopardy.

I agree rim brakes are terrible and typically very hard to set up properly. Also they're really bad in the rain, and especially when the rims can freeze.

Personally I'm a disc brake guy, either hydraulic or mechanical. My road bike's mechanical disc's have only needed an adjustment every few years, and the odd set of pads. I've been a mountain biker for decades, so a preference for disc brakes is understandable. A distant second to that would be a very nice set of V brakes, with the aforementioned problems.