"I'm on my period that's why I'm bitchy"

"I'm pregnant, I can be bitchy if I want"

"I only have all this extra weight because I have kids"  

I'm sick of it. Being on your period or being pregnant is not an excuse for being the biggest bitch on planet earth. I get it, I've been there, I've had many period and have 3 kids but never have I used that as an excuse for treating people around me like shit. Also, in regards to the letting yourself go topic.. You choose that lifestyle yourself. As a mom of 3 kids I am extremely busy but I still make time for myself. I take care of myself. Not for my husband by any means but because I want to. Having kids is not an excuse for being fat. Sorry to break it to you but it's your own laziness and lack of motivation post-partum. That of course does not include anyone with medical conditions that factors into being unable to lose weight. Also this is for people who complain about being fat, not those who don't care about the little bit of extra weight. 

Then you have the parents who make excuses for their children. 

"They're only 4, they don't understand hitting" 

Well then teach them right from wrong, your poor parenting is the issue, not the child. 

I think people just need to pick up their own slack and stop making excuses for your poor behaviour. You can consciously make the decision to be a nice person or a bad person. You choose how to live your life. Stop making excuses, own up to it and just admit to things.