My mother pulled out the imperfect organization line one too many times until my ever conservative at the mouth sister finally blurted out, "Well, I don't WANT to be involved with an imperfect organization!"
Well done, sis.
It's really a stupid argument when you think about it. Your argument in favor of the org is that it's imperfect? So, if an organization is perfect then that's bad? But yet we must strive for perfection? But, if we fail, then that proves its God's organization?