Earlier quoted context omitted.
No marriage is perfect. Every couple fights sometimes, if both people are being real with each other, and if they're not, that's a huge problem in itself. (I think everdev is probably right: they didn't let you see them fighting.) The goal is not to never fight; it's to always fight fair . Sounds like your parents didn't show you how to do that — which is too bad, if they themselves knew, because most people don't. I…
>No marriage is perfect. Every couple fights sometimes, if both people are being real with each other, and if they're not, that's a huge problem in itself. Buying into this argument that "every couple fight sometimes" is why so many people never eliminate fights from their relationships, because they think it's normal and so never put the effort into bettering themselves and addressing the root causes of problems so…
Self-control and compassion don't make disagreement or bad feelings over important things disappear. They are still present. The "never fight" relationships (not just marriage, but also friendships) are either "we do things as separately as possible" or one of the two ceased to talk about his or her issues. The latter are then "I had not idea partner is unhappy and bam shock divorce" situations.
The easiest way how to keep calm is not to care. It does not have to be screaming match, but if you never disagree about things like child raising, it is likely that one did checked out.