"You'd have to get those attached to some kind of hilt or handle to keep them from cutting your hands. Humans are so soft, you can cut right through them with just a sharp enough object." In case Usopp didn't know what his own body was vulnerable to.

Scourge didn't understand humans at all. They needed food constantly, couldn't survive without air for more than a few seconds, their skin was soft and easily punctured, they broke down and died in about a vorn, and it took way too long to make a new one even if you could obtain a pile of squishy parts to build it yourself. And yet there were more of them than Cybertronians. It wasn't fair.