By this same token you could argue for no licensing being necessary for operating vehicles either. Why not leave that decision to the owner as well? They know b

By this same token you could argue for no licensing being necessary for operating vehicles either. Why not leave that decision to the owner as well? They know best whether they can operate the vehicle or not! As commenters have pointed out, the big problem here is that your car can kill other people. If you want to make decisions without being bound by regulation, choose a different avenue that doesn't harm other people.