I wouldn't walk on eggshells to appease someone else's sensitive nature. This only enables their behaviour and ensures you will have to do so more in future.

It is of course different is someone has suffered something worthy of being described as a trauma, be it the death of someone close or another shattering consequence of life. But, when someone is simply like this often, for no reason at all, it is not a great idea to tolerate the behaviour in my opinion.

I also don't think it is the case of an undeveloped mind, but rather an example of the susceptibility of the human mind to programming from our environment. People are sensitive little bitches because they look out into the world or on their TV's and they see so many people moaning, crying or murdering for the most insignificant reasons. So we learn that the shit that doesn't matter matters, and the shit that does matter isn't worth addressing. It's too big. Let's instead focus on how shitty the meaningless stuff is.

Just my thoughts, but nevertheless, this was a great read and very accurate in too many regards.