Protein...how much is enough?

This should be a simple answer, how much protein do you need? But do you know, I've checked over 5 different sites and I still don't have an answer. Join me as we dive into how much protein, and amino acids and how many we need, and how many out body uses, and why are we talking about this? Well, protein contributes these needed amino acids. And to add to the confusion, there are complete proteins and incomplete proteins. My head is spinning...