If you want all your outs then shouldn't people that don't know how to skid/skip stop have rear brakes also then? Or all bikes in general? I have a front brake on my fixed gear but through practice have learned how to at least slow down fairly well with my legs alone well above 10mph. Of course it requires more distance to stop but I initially learned because I personally find skidding one of the many fun "tricks" you can do on a fixed gear bike. Eventually it became second nature and gave me a bit more control over my bike. I haven't heard of many front brakes failing but it's about being prepared right? Front brakes have enough stopping power but in some emergencies it seems like you don't have the time to modulate and prevent flying over the bars. I haven't run into a situation where that has happened but there has been a handful of times my rear wheel has lifted in an emergency stop. Wouldn't a rear brake be helpful here or am I wrong?