There are degrees of shitbaggery. There are people that can be redeemed without too much pain.

Nobody is an angel: everyone has harmful views and does bad things -- it's just a question quantity and quality. As much as it sucks the reality is if we set the bar too high we're going to spend life alone ... and risk being a hypocrite as well.

So we tolerate peoples failings as we hope they tolerate ours. We grow and redeem ourselves by learning of our flaws and blind spots from other people.

That being said there's a line where its not worth it. Everyone has to decide where that is for themselves.