Everyone has the option to stop their lifes if wish be.
Most don't not just from some technicalities but because parents or otherwise we have a biological urge to consent to being alive and make live being.
The consent is from our nature and only extreme circumstances makes it otherwise.
Yeah education and prevention were always the best measure against addictions. But when it's something deeply ingrained in society it takes time to move on. I like to think society is it's own living thing, evolving much slower.