You sound like my wife.
She will occasionally pop down to the dungeon while I am on the rollers and she tells me that it looks dangerous and I should wear my helmet. No I did not tell her about the fall today.
I am still laughing at my self, a crash and I was just standing on the rollers not even moving. I live in Northern Michigan and spend many hours on those things and am very confident on them, at least once I get moving.
I guess I should stick to frozen lakes their much safer.