If trends continue, there will be 10 billion Amish in 100 years.
Perhaps that's part of the reason that 84% of the world's population identifies with a religion.
Now I personally think every religion I've encountered is ridiculous fiction (no offence, just my opinion), but I will admit that there can be some pretty significant advantages in a community. Raising a ton of kids is probably just easier in a close community of similar minded families (a.k.a. the local church/temple/mosque). It's almost like it's intentionally engineered to be this way.
Big if. In a true famine, the poor usually die first.
> Evolution doesn't care for the comfort of anyone.
Evolution cares about sexual desireability and fitness. Rich people usually have more.
In nature we see these two strategies as well. Some species try and have as many babies as possible, where others have fewer but concentrate resources to make sure the few are more likely to survive. Neither strategy is optimal in all situations.