I think that's somewhat shortsighted.
You getting killed is seldom just your own problem...
Say someone accidentally trips over a wire that you use while standing on the top thread of the aforementioned ladder while using both hands.... These little accidents happen all the time - but had you been standing 4 threads down, using one hand to secure yourself, a small shake of the ladder wouldn't have caused you to fall down, and the fall wouldn't have broken your back, leaving you weelchair-bound for the rest of your life. Now there's a rat's nest of conflicting responsibilities...
Let them hurt themselves
Are you serious ? Responsibility should only be granted to those who can bear the load.
Safety rules and regulations may be way over the top sometimes, but in the end their primary goal is not to protect YOU, but to protect society from the needless disruption that's caused by accidents and even deaths that could easily have been avoided.
They're far from perfect, but they do exist for a very valid reason.
Suicide is very socially disruptive, it causes a lot of grief. Suicide by stupidity or sheer carelesness isn't that different.
If anyone feels the need to engage in high-risk activities, I suggest basejumping or mountaineering. Play with your safety all you like, in an environment where it's more or less socially acceptable.
But displaying carelessness or simple disregards of given safety protocol reflects poorly on one's professional peers, and invokes biased opinions and prejudism.
OK, My 2c worth of rant is over....