"Hard times create strong men", doesn't mean you need constant war to keep the men strong. All men need to be strong, is to be responsible for themselves:

That means hunting for your own food, instead of it being delivered to you already processed. It means protecting your property and loved ones, instead of calling the cops.

And no parent should want anything less for their children.

But none of this is possible with so many people on earth. Once again, depopulation is the obvious answer.