There are a lot of obvious upsides to this, but the downsides are pretty dire. There are very few human beings (if any) that don't have something lurking in th

There are a lot of obvious upsides to this, but the downsides are pretty dire. There are very few human beings (if any) that don't have something lurking in their genetic history. An elevated risk factor for this or that. It's potentially a great way to suppress particular groups of people since there are a lot of heritable diseases that are typically only carried by certain ethnic groups i.e. African Americans and sickle cell anemia. Also where do you draw the line? Outlaw people from procreating if there's a 100% chance of inheritance? 50%? 1%? What about nonfatal, inheritable stuff like obesity or blindness? Or fallen arches? Even the "easy" case (a 100% inheritable, 100% fatal disease) is maybe more complicated than we want to think. What is "fatal?" Fatal in < 1 year? Fatal before adulthood? Fatal in one's 20s? What about a disease that is "fatal" in the sense that it just subtracts 5, 10, or 20 years from one's expected lifespan? Penalty is a permanent tax of up to 10% of your income for life. Even this is problematic. What about very poor people without any money to tax, or what about very rich people who simply don't care and/or have so many tax loopholes that they pay no taxes despite living comfortably?