If we're going to use that
If we're going to use that justification, "could cost the public," then EVERYTHING becomes a legitimate excuse to throw you in jail.
Like drinking soda? Sorry, could cause you to get an ulcer or have a heart attack, so it's illegal now.
Enjoy beef jerky? Sorry, contributes to heart disease and can cause other health issues. Illegal.
Like to walk to the park on a Sunday afternoon? Woops, you could fall and hurt yourself doing that. No longer legal.
Like to cut your own food into bite-sized bits while eating? Uh oh, that knife is dangerous, you could hurt yourself. Sorry, outlawed.
Think bungee jumping is fun? DOH! It's dangerous, you could get hurt! Illegal.
Working out? Playing baseball? Trampolines for the kiddies? Nope, nope, and nope. All illegal now.
Where would it end?