Can humans be trusted with control over genetics?

Puzzle through this classic ethical dilemma and decide: should parents be able to choose genetic traits for their children?

Andre and Leslie are a deaf couple who have decided to have a child, and they’re considering using a process to ensure deafness in their child. As deaf parents, they feel they could provide better guidance to a child that would share their lived experience and grow up immersed in deaf culture. But is this genetic intervention ethical?