Evolution in the Modern World -- are we regressing?
It seems to me that evolution as it has existed throughout human history has undergone an immense change in the first world. (I will declare at this stage a quite limited knowledge of biology, hence my bringing this up here)
I make this assertion from the fact that in the West it is no longer the most succesful who spread their genetic seed the widest. The well off are more likely to have fewer children than the lower classes. I wonder if this could potentially lead to (in relative terms) a negative evolution, as genetic material which is more likely to grant success is weeded out of the population over time.
Moreover, I wonder to what extent modern medicine is allowing the propogation of disease causing genes which would have been extinguished in ages past.
Please let me know your thoughts! I have been rhuminating on this for some time of late.