Some people like shooting themselves with guns sometimes. It doesn't mean I should manufacture guns and advertise their effectiveness for that task, or worse, use psychological tricks to sell guns to these people while hiding my motivations.

Dear lord, they are cigarettes. Everyone understands the risks.

Guns are legal, so people will manufacture them and people will buy them. What people "should" do is not murder.

First, let us not forget it took an entire public health initiative and excessive public regulation for "everyone" to understand the risks. This is not always the case generally and was certainly not when Marbolo employees, some high up with power and freedom of work, were working to lobby against that information regarding their risks coming to light.

As far as guns, again you did not read my full example regarding the marketing. The conditions are to show that making something and selling something happens in a context, not a vacuum. Not all cases are moral or should be encouraged.