Nothing is worse than being surprised by how awful someone is. Expecting the best is a sure fire way to get burnt over an over again, but I believe it to be the only way to live happily.
I’d rather live as an optimist that is hopelessly naive and get shocked by cruelty then live as a realist and be shocked by acts of kindness.
Still I would not be saddened if there was a way to pick them out of a crowd.