What's with the random holidays popping up?

You don't have to participate in the random days and my boys are always so happy that any negative moodlet is so far on the end of their list it doesn't even show for them. Brawl day came and went without nary a tiff and they didn't give two carps about it. They were too busy playing music, painting, and woohooing to worry about going down the street to fight someone that didn't need to be fought with. It's not a big deal and hardly anything that can be considered an annoyance. They'll get over whatever negative thing pops up, but if you treat them good and have them in a good environment in the first place, it won't hardly matter anyway.