Why? Because some people are just terrible human beings,and terrible people do terrible things. If you're racking your brain trying to understand it, it just means your not one of those terrible people
You’re going to come across people in your life who will say all the right words at all the right times. But in the end, it’s always their actions you should judge them by. It’s actions, not words, that matter.
The only people who are mad at you for speaking the truth are those people who are living a lie. Keep speaking the truth. Some people believe their own truth, just because they can't handle a person with a borderline personality.