Honestly, I would never have given him the morphing ability.
Lets just say I was actually one of the Animorphs. And lets say I didn't know what was going to happen or had no idea how the story would play out. One of the things I like about Marco is that he will get to the bare bones of any situation or person and he will drag it out into the open.
People write Marco off as a cynic. They always write a guy off as a cynic if he laughs at a situation. But the people who laugh are always taking it the most seriously. I'm a strict follower of Murphy's law and if Marco can spot a flaw in any plan I have, I'm going to scrap the plan. Plain and simple.
Everything he said about David, even when I read the books, made sense to me. Everything in David's personality sent up warning bells. I mean come on, his dad grounds him on the word of a psychic talking snake. What kind of home life did this kid have if his father didn't at least consult David on any potential wrong doing? Much less wrong doing imparted by an entity that neither of them should be able to explain just yet.
So, in David's mind, losing his parents to the Yeerks must have been a liberating experience as opposed to the trauma it should have been. A person with that kind of mindset shouldn't be given two sticks to rub together much less morphing technology.
