Commenter Ed Mahmoud abu al-Kahoul makes a point I think well explains why the godless left is so heedless of sanity.
If there is no God, and everything ends when you die, why should you care about anything after you die, especially if you decide having children would be too big a burden on your lifestyle.
That would explain an awful lot about the policies of the godless left, like why they are willing to run up the deficits by kerjillions while choking off entrepreneurship at the roots through ridiculous amounts of legislation. The left doesn’t much care about what happens after they die, they don’t tend to have children, and they certainly don’t expect to stand in judgment for the things they’ve done.
It would also explain why Europe doesn’t care much about it’s impending Islamization. For the most part, Europe hasn’t bothered to produce a future generation, so they really have not much stake in what conditions the next generation is living under.