People can cut their own hair.
Sometimes, people's hair grows faster when they get it cut more often. But, no it is not necessary to cut your hair to get it to grow, but it is healthier for your hair to get it cut once in a while.
Military people cut their hair because it is a requirement of the armed forces to have a neatly cut look.
People cut their hair to make it into a certain style that they like, or because their hair is just too long for their comfort.
Some people like short hair and they cut it, while some people like long hair, and don't cut it.
if the people that cut their hair were good at it then they would carry on doing it wether they were black or white
Absurdity!
By helping people cut their hair.
With scissors
Well it depends on what kind of hair cut you have. If its bad but not as bad as other people see, hair extentions will do the trick
Cutting your facial hair is a personal choice. Many people don't cut all of their facial hair. They opt to trim it.
a barber or a hairdresser