Ok, so we should ban:
Hang-gliding, mountain climbing, roller skating, all vehicles, etc. on the basis of preventing the harm all of them quite frequently cause.
We should also ban religions since people who take them in excess cause harm, and the idea is to ban anything for EVERYONE to prevent harm just because of the actions of a few who abuse it, right? So religion should be banned if this idea is true. Right?
Roller skating is clearly a menace to society because some people will injure themselves and thus harm the society with their medical bills, right?