Architecture critics

I do think there are snobs in any walk of life, but critics on any subject are viewed in a 'Failure' light by me, i do find myself asking myself the same question why be a critic on someboy else's efforts, if you are so smart why not have a go yourself? That may be super simplistic, but that is the way i do look at it, and i do see some as super smart-arses that do in fact make themselvs appear so because of their public utterence's, you know the ones that never say anything good, about anything?