Two reasons. One, the tone of the complaint, especially from Mike, was not one of disappointment, but one of entitlement. It wasn't, "Those lucky ---daisies--- in Asia get to see it a week earlier than us." It was more along the lines of, "Why do those Asian ---maternal-smurfs--- get to watch OUR movie before us."
Second, is that this sense of entitlement and outrage is over something so silly: not being able to see a movie until May 4th instead of April 27th. A movie, mind you, that you've lived happily without seeing for your entire life up until this point. Granted, this second issue is only really an issue because of what I see as the slightly distasteful entitlement thing above. I totally get being excited and impatient for something new. But the sentiment in this thread wasn't one of so much of disappointment but offense and, like, nationalism.
Btw, Vigo, I feel your pain. I'm the father of a 5-year old girl! And I was in school (i.e., earning no money) for the first four of those years. Prior to her birth my wife and I saw everything that was remotely interesting in the theater. In the five years she's been alive I'd guess I've been to the theater maybe 10 or 12 times and prob 6-8 of those were kids movies. Paying for (or even finding) a babysitter sucks.