> There's always the argument about "Playing God"

I come from a religious background and this is an argument that has ceased to have meaning to me. We can't possibly play God. We can't create something from nothing. All we can do is fiddle around with this existence we're in. Part of that happens to be genetics.

What drove me to change my mind was the question "if you have the ability to treat a genetic disease, and you don't exercise that ability, are you complicit in the person's condition?"