I switched from drops to flats because it "seems" safer. I commuted for many years into downtown Minneapolis with drop bars and they never seemed to be right for the situation, too twitchy. This probably stems from many years driving a naked GL1000, it has wide handlebars. The switch to flat bars wasn't that expensive, all second hand parts from the LBS, and it doesn't feel twitchy. The only time I have problems with my hands is when I forget to keep the wrists straight, mostly solved that by switching to shaped hand-grips.