Agreed, in general, but the word "accept" might be taken to imply that we have learned to live with those weaknesses in such a way as to sustain no damage from them.
Not what I think is the case. Acceptable ignorance due to the idea that the majority rules (democracy) seems to instill a beleif in helplessness in anyone that feels they can't change the world around them.
Manifestly, such a situation would be quite rare.
It's becoming more of an issue. Kids have committed suicide over the comments made on a facebook page. Kids create cliques and they hurl judgments at anyone who does not fit into their personal and idealistic realm of normalcy.
It's a disorder that is rapidly spreading into the adult community. Anyone not fitting a particular profile is judged and committed to the category of undesirable and a potential troublemaker.
Follow the trail from TT's comment and the primary cause of most - if not all - dysfunctional behaviour might be revealed.
Remember the Milgram experiement?