Eugenics is exactly the kind of science that will be suppressed by Nature. And the eugenicists were right. The technology that makes us comfortable prevents the natural cleaning of the gene pool. People condemned the solutions that eugenicists came up with on a moral basis but never suggested anything morally acceptable to replace them. The attitude is "well, promoting good genes requires steps we find repugnant, therefore let it happen." It would be interesting if they had this attitude towards climate change.