I might just be confused, but from what read/understand I don't think FP vs OO is a proper comparison.

I think the right question should be FP vs imperative languages? As far as I know even functional languages can have OO features, but functional programming is more about getting away from an imperative style of programming.

Maybe someone who knows more can chime in though.

But in my personal experience, using a functional language just helps me write correct code. Using an imperative language makes it easy to be sloppy and include bugs