Back years ago, when mfgs were going to headlights on all the time, there was concern that it would cause a slight reduction in fuel mileage. Down here in Florida, the biggest concern I have on my motorcycle, is people 'texting'.
Yep, nothing gets your attention faster than going around a sweeping turn and having a 4 wheeler coming at you, in YOUR lane, with a knucklehead texting away!

ron