We like our deities to be larger than life. Perfection is, after all, a worthy goal and calling.
To me, perfection is unattainable. It is akin to statements like 'all powerful' or 'all knowing'. It may sound fancy, but it produces logical paradoxes that cannot be reconciled. i.e. the famous statement asking if god could create a boulder so heavy that he himself could not lift it. The creation of the boulder requires an 'all powerful' capability, but that same ability is now undermined by the inability to lift the newly created boulder.
Perfection, all knowing, all seeing, all powerful are just concepts that do not manifest in reality. Kind of like asymptotes in mathematics. You can get close, but you never reach the asymptotic value.