Picking up a gun does not make you kill yourself. For far too many people, picking up a drug does.
Nope, they were already on path. They have addictive personalities, even addictive genetics (interesting little chunk of the gene pool there, it both enhances one’s ability to do drugs without ODing AND make you more susceptible to addiction), or they’re just losers. They’re going to be a mess one way or the other. Having to explain this one to my in-laws lately, they keep hoping he’ll get off drugs and get it together, completely ignoring the fact that the only way he had to get enough money to do enough drugs to be an addict was by lying and scamming and stealing. With or without drugs he’s a scumbag. That’s really how it works for most addicts, they were already on a path with no good ending, then found drugs made the trip more interesting.
Case in point: Robin Williams, R.I.P.