"Social Darwinism" in the 1900's was introduced by robber barons who used the phrase "Survival of the fittest" to rationalize their exploitation of poor people. The term "Survival of the fittest" did not come from Darwin but the philosopher Herbert Spencer.

This is part of the reason for misinformation about Darwin.

Remember that "strengthen(ing) one's sense of belonging to the community." could easily be applied to the rise of Nazism. I suspect that there was a strong religious component to those times.

Amos, I take exception to your source, "Religion, Social Networks, and Life Satisfaction," Lim and co-author Robert D. Putnam, the Malkin Professor of Public Policy at Harvard University" and take it with a grain of salt. This is pure opinion based on prejudicial research.

Of course you are going to find conclusions in research based on what you are looking for.