Well, you can't enter a construction site without a hardhat, and a chef has to wear gloves in the kitchen. Helmets are required for driving motorcycles and race cars, and you definitely can't go into space without a helmet, either.

Self expression is very important to me, but you've gotta keep safety first. It might not always "look cool"—[ Finger quotes. ]—but neither does a neck brace, or a face covered in bandages you didn't pick out.