A large portion of my family is diabetic, as in my mom and all aunts, uncle, and cousins over 30 (except 1) are diabetic. This is across 4 countries, various lifestyles and weights, and gender so it stands to reason a large part is genetic.
With decent health care and due diligence this condition is very manageable with minimal complications. But improperly managed it will destroy virtually all organs and degrade quality of life.
Is it immoral to father children that are likely to develop diabetes sometime in adulthood? Would your answer change for other genetic issues/diseases?