Should we keep or get rid of a waiting period to buy a hand gun?

I think that we should keep waiting periods on buying a hand gun because I think that it would be safer. A person doesn't need a gun right away. If you need a hand gun, you either need it for protection or to hurt someone. If you're planning on hurting someone, you're probably really mad or upset. If there is a waiting period, it could help that person cool down. If a person has easy access to a gun, it could cause more trouble.