My hybrid's bars are 62cm wide and still feel too wide to me. But I'm accustomed to road bike drop bars.
I know the conventional wisdom holds that narrower bars are twitchier, but I find it just the opposite. The problem with wider bars is any slight input translates to much more steering effect. I've ridden this bike for a year and still find it harder to hold a line when I reach for my water bottle. Never had that problem with a road bike, where the supporting hand is closer to center and has less effect on steering when reaching for a water bottle or downtube shift levers.
I may try the trick mickw suggested before I cut my bars to suit some new grips. I'm still using the original rubber friction fit ergo grips and while they're comfortable they pivot around too easily. But I'll try cutting holes in the ends to determine the bar length I prefer before ordering a pair of locking ergo grips.