Why would we accept that instead of changing it?

My interpretation of ModernMech's comment is that acceptance is a pre-requisite of changing it.

ie. if you didn't accept it, then you wouldn't feel the need to change it.

I agree that is the most favorable interpretation.

That's how I meant it but now actually I don't agree with the usage of "accept", because acceptance implies consent. So I would change the word to "acknowledge".