In the US the five year survival rate of melanoma, the most dangerous sort of skin cancer, is something like 99%. In 2015 only 60k people died from it globally

In the US the five year survival rate of melanoma, the most dangerous sort of skin cancer, is something like 99%. In 2015 only 60k people died from it globally; compare that to the billions of people who got more sunlight than the average software engineer practicing sunlight avoidance and I think it's clear there are better things to worry about (for instance, the misery of spending your life in the dark popping pills instead of getting some fresh air for an hour or so a day.)