Reply #3: Here's a sick addendum to your theory...

[rucky]

which, I believe is compatible with the greed and apocolyptic freakishness we see from them.

4) Controlling overpopulation will slow down the depletion of resources. They can do that through mass killing in their endless wars.

Remember, a few of these people are former liberals (so they say). They are very aware of the long-term problems facing the world & they lost their hope... even worse, they figured they'd take what they can while they still can.