captain:
For what good reason please tell?
Oh man, I didn't know I was going to have to back up my statements.
Ok, here is my one good reason.
There is no intuitive thinking or common sense reasoning which will protect an untrained would-be diver from DCI or overexpansion injuries. There are no warning signs to let them know they are getting into dangerous territory. They could dive happily day after day until they kill themselves and not ever know they were at risk.
This is a self regulated industry and having numerous untrained divers killing themselves, is in my opinion one of the quickest ways to invite the government to the party. No RSVP needed.
This is actually one of the only situations where I believe in protecting people from themselves.
captain:
I can buy a car without a drivers license, an airplane without a pilots license, a boat without a captains license, a firearm with no instruction how to use it. The list goes on and on of things that can maim and kill I can buy by
just handing over the cash and I can kill and injure a lot more peoples with these things than just myself.
Well, in my opinion this is where the statement, just because you can, doesnt mean you should comes into play. I can speed down the highway in a stolen plane, shooting my unregistered handgun in the air, drunk out of my mind while singing the theme to love boat, but, I probably wont because I have enough common sense and life experience to tell me that this could go very bad.
I think people should be able to kill themselves any way they want to for whatever reasons suit them as long as they dont take anyone out who doesnt want to go.
All of the examples you gave are good examples of what you should not be able to do.
Where I live in Canada, you cant buy a gun without taking a safety course, you cant operate a boat or PWC without operator card and when I bought my last truck I had to show my valid license, proof of insurance and I had to listen to the sales agent go over all of the safety issues regarding the vehicle. I dont really know about the plane, because in my wacky life everyone I know who bought a plane was a licensed pilot. Go figure.