Our local Yamaha bike vendor suggested to use kill switch every time i shut down the bike, so that's what i've been doing for two years already and nothing is broken or damaged!
You don't have windshield and fairings, that's why it happens. It's fully normal. :thumbup: Riding without helmet will do the same, I guess (or even worse)! :rolleyes:
P.S. I ride the same bike. Love it!