I have to agree that loving our parents is something they earn once we are grown.
As children we had to try to be loyal regardless - otherwise end up with no food or shelter, right? As a kid I spent very little time with parents. My parent were divorced and mom had to work and keep up her social life.
As an adult I got to tailor my relationship with my mother in direct correlation to her ability to be cordial on any given occasion. I did not have to have any contact with her, and for long stretches of my adult life, I didn't.
I really dislike mothers day or fathers day. I don't have kids of my own, but people still feel a need to wish me Happy Mothers Day.
Cut that out, people!!