[electromagnetic]

Agreed, human evolution will be determined less by selection pressures and more by breeding pressures. Those who breed early and often will dominate the future as late pregnancies (35+) typically bring higher complications, earlier births and typically less healthy offspring.

However society will play its pressures too. Access to adequate and nutritious food can be more important than healthy genes (after all you need proper nutrition for your genes to express themselves correctly during your development) so a 22 year old mother on welfare with 5 kids and no child support is going to have a problem raising healthy children.

In the US, access to healthcare will certainly play a huge part in the future (presuming it doesn't change vastly over a long time). An imbalance in access can give an unnatural advantage to the unhealthy.

The potential for the future of evolution in our species is amazing. We have so many more variables in play that will be tweaking us, instead of standard variables for hunter-prey relationships. It raises a lot of questions about what our species will be like in a few hundred-thousand years.