And on the subject of us all being just a great big bunch of old cry babies......
Same here! I think we're operating at such a level - an extreme level - at all times or nearly all times, keeping going, keeping it all together, that sometimes it's a 'straw that breaks the camel's back' situation.
I've become increasingly aware too of just how much chronic sleep deprivation alone impacts on my mood.
I think most people don't realise what it's like. Many people will have relatively short or medium term bursts of a family crisis or illness, or lack of sleep with babies and toddlers, (and I'm not minimising that - that's hard enough), but for some of us it's not temporary, it's not even longterm - it's life.
There have been times over the years when I haven't cried. I couldn't. Things seemed too bad to cry, if that makes sense? I felt that if I started to cry then I might never stop, I think - and I had to hold things together. Not crying is probably more worrying, less healthy, than crying.
So cry it out, people, when you need to. Let the floodgates open, and don't feel ashamed. I know we have to be superhumans, but actually we're only human. 
