Seriously? Are questioning the logic of a woman?Would your wife rather fly behind a Merlin?
Seriously, where did she get the idea that more cylinders is "safer".
But, no, I share the thought that losing power (fowled plug, blown head gasket, lost compression) in one of 6 cylinders is a heck of a lot less traumatic than one of 4. I would rather have 83% power than 75%.