I've heard this argument before at the last reptile show I attended and it makes me disgusted. A guy was trying to convince me to buy his full grown normals so I can "practice" breeding and as he put it "if you screw up, it won't be a big deal". Personally, I'd feel pretty damn bad whether I kill a clutch of normals or a clutch of whatever morph you want to fill in the blank with. It's sad this kind of mentality exists in the hobby world.
If you try to argue that it's worse killing an expensive clutch than a normal clutch, you missed the point.