I just got my horn fixed after a frustrating few months without one. Yesterday I counted three beeps, and that's not unusual. It's always when people have been dangerous (old fella cut me up at roundabout, brassy blonde in a chelsea tractor pulled out into road in front of me for eg) but not strictly necessary as I had seen them each time and was able to slow down. But it's so tempting to beep at people who make obvious and selfish/careless mistakes....
Am I a wanker?