My friend decided not to have kids. He suffers from health issues and fears it may be passed down and can't cope seeing his children suffer the same way. At fi

My friend decided not to have kids. He suffers from health issues and fears it may be passed down and can't cope seeing his children suffer the same way. At first it struck me as a bit alarmist however having a not so serious issue myself helped me see his point of view. But my feelings about his decisions are never fixed though and sometimes I do wonder if he'll ever regret his choice, especially since genetic issues are not always passed down.