Yes. Most of US states, require a rider to wear a helmet.
If you should fall/crash, it can protect your head (and face).
You are not required by law to wear a crash helmet in Florida however i would highly recommend that you do! Florida does not require a helmet while driving a motorcycle. http://www.edgarsnyder.com/auto-accident/motorcycle-accident/helmetlaws/florida.html
It is someone who listens to bush while cooking bbq with their motorcycle helmet on.
Wearing a motorcycle helmet is highly crucial for one's safety while riding a motorcycle. It can save one's life if one gets into a crash or accident.
If there is a mandatory helmet law in your state, you will probably get a ticket if you do not wear a helmet when riding your motorcycle.
Use a helmet.....
The rider has to be at least 18 to ride a motorcycle helmet without being cited.
Pros: When you crash it well save your life. Cons: None
Helmets are worn to protect your head from concussion or fatal injuries that have a relation to heads. If you wear a helmet while riding a bike, there is a chance you might fall but the helmet saving you. It is law that you were a helmet when riding a bike or motorcycle, ATV, etc.. If you are caught by the law not wearing a helmet while riding said vehicles, you may be fined around $20 - $200.
In all states, the person operating the motorcycle must have a motorcycle license, which is separate from a regular driver's license. Some states also require all passengers to wear a motorcycle helmet at all times while riding.
A helmet can protect your head from many different injuries that are possible while riding a bike or motorcycle. You can prevent cuts to the head, concussions, and even brain damage from hard hits or falls.
You must if you are a Temporary Permit Holder, or first-year endorsed operator or a passenger, and during the test. Please check the details in the motorcycle manual (related link).