Hearing Protection: Suppressors considerably reduce the muzzle report of a fired weapon and in doing so reduce the risk of hearing loss to the shooters ears.
Fire Control: Suppressors also act as mild muzzle brakes and allow faster follow up shots. Reduced flinch leads to increased accuracy and more rounds on target.
Increased Communication: The removal of cumbersome hearing protection allows better communication with other shooters and a safer shooting environment.
It is your right: The right to possess NFA items is secured by the Second Amendment. Exercise it!