We have before us an exceedingly difficult problem demanding every ounce of our creative intelligence. There's always a multitude of worthwhile causes, but I can't imagine any more important than eugenics, because the health, intelligence, and character of the population are essential to the recognition and solution of all problems. We can never fully anticipate what difficulties the future will bring, and solve them in advance. Certainly it would not represent the optimal use of our resources. Far and away the best thing we can do for the children of the future is to bequeath to them the gifts of excellent health, high intelligence, and good character so that they will have the maximum innate capacity to meet whatever challenges might arise.
Biological integrity is the number one priority for individuals, and for our species.