Driving was once a right too....until there got to be so damn many cars around (scaring the horses) that they had to regulate it! The same went for owning and firing guns, riding horses, owning a dog, wearing a sword, etc. They all used to be things you didn't need a damn license for.
Taking this as a general human trend, I predict that we will one day need a license to cough, sneeze, roll our eyes, use a knife and fork, wear shoes, and fart.