A chainsaw can be used for marvelous things, the wood for your house or your furniture. It can be used to help people in need, removing objects trapping them. Even to put out fires in roofs. There are thousands of great uses for chainsaws. Yet using it against a human will lead to a catastrophe. It is a mistake you do not want to make once. Making it twice should ve unthinkable.

Just because a tool is effective in situation A does not mean it is effective in situation B. We tried your idea and it resulted in a human catastrophe.