If you refuse to wear a helmet while operating any kind of Sand Toy in Glamis... You are way too stubborn for your own good.
About 10 years ago, I was in that state of mind. Then, I started to wear a helmet in my XP (it took about 15 seconds to absorb the fact that I wore one in every other situation). Within the first 5 minutes of that initial ride, I realized that I would never drive it again, without a helmet.
The, "Don't tell me what to do" line is pretty weak when your wife and kids are burying your dumb ass, because you HAD to look "cool" around your friends... that are likely wearing helmets...