Have you ever worn a modern full-faced helmet? Vision restrictions are almost nil and they are at the bottom of your vision (caused by the chin bar) where your vision is not important for safety. As for hearing, I have to wear earplugs because I hear too much and it's bad for your hearing. I definitely hear more with a helmet on than I do in a car.
Well, you make a good argument for requiring their use in cages, it seems to me.
I wear a half helmet, and in a cage it seems to me there would no restriction of movement etc. Not only that, the passengers don't need mobility, vision, etc, they just need protection! Cage Passengers would be safer with a helmet than without. Seems to be a truism to me.
I had a full helmet on, but not when I was riding. Sure felt like a straight jacket to me.
I would never discourage anyone from wearing a helmet, cage or bike.
I see young guys on crotch rockets and they dang well better wear a helmet, they are going to wreck, it is just a matter of when and how bad. Shorts, tennis shoes, short sleeve shirts and a full face helmet, quite a sight.
Anyone who has been riding regularly, for many years, has seen every dumb move a cager can make, know their bike, know their brakes, and know their limits. The chances of them crashing are unlikely, and they should have a choice. That crap about being a burden on society is. . . crap.
I'm not against helmets, but I am against helmet laws, they are not effective.
I am insensed by the states that have mandatory laws for bikers, and are not even discussing the same laws for cagers. It defies common sense. It should at least be on the table, but it is not. It would be voted down because bikers are such a minority, but it should at least be on the table.