As noted in the initial post, the sociologist Durkheiem did show that people living with a partner and children were less inclined to suicide. But I wouldn't build an advice from it.

In a similar way, I've seen a few couples making a baby in order to patch their vanishing relationship. It never ended well. I've also known two fathers that ended their life despite the love of their wives and children. Having a family reduces the rate of suicide, but it also increase its potential damage. I don't think it should be recommended as a therapy.

I’m not saying it’s good therapy. I’m saying that at a macro level that the disintegration of the family unit is one of the root causes of this particular type of existential depression.