Been wearing an okay helmet for a few years now, though TBH I've gotten lazy about taking it along. It
is a little heavy. My head is already pretty large from my huge ego and as a result it kinda feels like an orange on a toothpick at first, but then I get used it and I often forget it's on. My biggest concern is blocking the rear passenger's view because I feel like Dark Helmet from Spaceballs.
I could see how you could tweak your neck with the extra mass if there wasn't a nice chromoly tube close by to stop the helmet from swinging too far.
A few years ago on a smoky day in the gorge:
As you can see, ANR headsets of choice still in use.
It's kinda like skiing. I didn't really like swapping out my wool toque for a helmet at first, but now I feel naked without it. Still waiting for that feeling in the cockpit.
I do think a lot of fatals are a result of BFT to the head. My nightmare is being knocked unconscious and unable to peel myself out if there's a post-crash fire starting. Then there are the accidents with so much energy you'd need inertial dampeners from the USS Enterprise to prevent your guts from liquifying from the deceleration alone.