Its true that communication issues are the source of most of the conflicts generally. But there is something else - as a grown up, it took me some time to real

Its true that communication issues are the source of most of the conflicts generally. But there is something else - as a grown up, it took me some time to realize and accept just how many other grown ups have various issues, are imbalanced, carry scars from messed up childhood and so on. If you spend some time with them, over time these will start to surface in various, often nasty ways. Its a mistake to try to be friend with everybody. Life is too short, rather invest time and energy into those relationships who are worth it, ie give back, help when you need it etc.