Imagine removing all forms of genetic illness and breeding something that has a better quality life. Wouldn't you all want that in your son or daughter? Then the next goal would be lifestyle changes that prevent illness too. That and dietary modifications and a proper upbringing.
Personally I am in favor of ripping out testes and ovaries and implanting as near error free ones. Indeed it would change our status as a natural bred species to something merely doctored, however if we can get it right, we have more control of things. I wonder what would happen to healthcare if we did that?
I feel confident that given enough time, we CAN solve most of our problems indefinitely. It just takes hard thinking and practical science.
Sadly, some problems will always be present in our span of existence, that is just life. Even science has its own evolution.