I suspect this is a generation thing. My fathers generation aspired to be perfect. Mine doesn't. I certainly don't. I just do my best and hope I learn along the way.
Also I think that even if I hypothetically might at one point know everything I'd still fuck it up. "Perfection" is relative and shifts a lot depending on who does the observing. It's just one of those philosophical terms which people use as if they had a universally accepted concrete meaning, when they don't. Talking about abstractions is always very difficult. People will always load them with their own connotations. It's hard not to.