The greater good

I've realized over time, that you really have to choose your battles. There are some arguments, you're going to win, some you're not, and some that just never get resolved. The ones that never get resolved aren't always an agree to disagree either, they're just arguments you drop, just to stop arguing, but then pick back up at a later time. Does there have to be a clear cut winner? How many times can you keep having the same discussion with out there being a resolve? And why do we let things drop or just hang out there without resolution instead of dealing with it head on? Is it so we can make the illusion that everything is ok for now, when in actuality it's not? Is it for the greater good of everything else or is just a time bomb waiting to go off, that could blow everything that is good?