I read that nearly 100% of people that jumped off of bridges (that survived) regretted the decision almost as soon as it was too late to do anything about it. The ones I read about made mid-course corrections to increase their chance of survival.

If I were king of the world, I would make a suicide simulator that would be convincing and real. Let people jump off of a bridge or push them off, anything so they can feel that 'OH CRAP' moment and know in their heart that this is the end.

Of course it would be safe, I think that it would be very effective as well.