Should Sperm Banks Screen Donor Genes?

Probably:

The size of the impact of spreading bad genes becomes much larger if you are the father of 50 children rather than 2. Concerns of depleting or polluting the gene pool are fairly irrelevant (since relatively few children are produced by donor sperm compared to the normal method, and it is not clear that the gene pool itself holds any moral value). But there is a predictable individual impact on the children that will result. The disbenefit is mainly theirs.