Someone debate me

[Anomalocaris]

Hmm...but doesn't this negate free-will? Can't we always chose to be more rational?

There is no free will. All will is precisely determined to follow just one course regardless of the perceived degrees of freedom present. We imagine free will because the determinant controling which course is to be followed by you or someone else is often inscrutable to you, and we operated within the psychological preconception, possibly with physiological causes, that will without clearly seen determinants has no determinant other than will itself.

Why do we blame people for their irrationality, if they have no way to chose to become rational?

We don't blame them. But we act like we blame them so as to better nullify them.