It's great that your kids turned out well, and I don't doubt that the surprises were thrilling. But how can you deny other parents the chance to give their children whatever advantages they can, as they see them?
On the issue of the forces we do not understand, yes, they are out there. We do not understand everything yet. But we understand a great deal more than we did 200 years ago, and it is a fair guess that we'll make a comparable amount of progress in the next 40 or so. Then genetics will not hold great mysteries for us. We will be on to something even more profound, like how matter came to be or why light has a speed limit or how many universes there are...