There is undoubtedly some genetic evolution going on, but cultural evolution is much faster than genetic evolution, and will have a bigger impact much sooner.

There is undoubtedly some genetic evolution going on, but cultural evolution is much faster than genetic evolution, and will have a bigger impact much sooner. Reclusive groups, such as the Amish, that avoid modern society and maintain high birthrates and cultural integrity, are increasing their numbers very quickly. There's no reason to suppose that this will suddenly stop, though due to the nature of exponential growth it may be a while before this begins to have much effect on average birth rates.