It's both. Even terrible people with something to lose are less likely to throw it all away.

If this guy makes $35k a year at dollar general, he probably doesn't go on a murder spree.

But you could also just not be an asshole. Why go after random people instead of someone who actually helps cause the bullshit?

Both apply. Yes, he ultimately chose to do it. However society shaped and funneled him into that position. It's not a binary decision between individual and systematic, both can apply. In this case, social systems failed and put a large number of people in a bad situation with an apparent easy way out. Almost all then chose not to go on a killing spree. Unfortunately, "almost all" is "all". Some will make the bad choice, when put in that position.

As a society, we can't change individual choices. What we can do however is change the framework those choices are made in. If we aim to put fewer people in that position, then fewer will make the wrong choice, and we will all be safer for it.

society isnt you or i society is the general way things are and yes society is the cause of shootings. mental health is a direct measure of society.

society fights tooth and nail to have guns be super easy to get.

society also fights tooth and nail to keep (mental) healthcare behind an impossible wall.

so now we are generating mentally ill people that have easy access to guns. multiply that by the internal bias and bigotry you were raised with and many millions of potential offenders. boom you have a shooting every freaking day.

yes the shooter is shitty and should be killed or in jail but society is at fault for the shooting even ever coming close to occuring.

You only said that some people have a lower threshold.

You guys are groomed in social=bad.