Each to their own.
I'd be seriously concerned about the world the coming generations are going to inherit. Some of my friends here in Germany have already said they prefer to have no kids than to have kids who'd become muslim slaves.
If they actually decided to have "more kids" instead of "no kids", then it's far less likely they would end up becoming slaves to the Muslims. Strength can be found in numbers.
Seems like many Europeans are willingly committing cultural suicide.
"The fate of nations is intimately bound up with their powers of reproduction. All nations and all empires first felt decadence gnawing at them when their birth rate fell off." - Benito Mussolini