You know, I prefer, as a matter of course, to look at the glass as half full. I think it's important to remember these words. However, you can't judge one person's situation based off of someone else in another country. Here in the grand ole US of A, for example, you can fit most categories on this list and still lose your kids because the government doesn't like the fact that they're living with out electricity in an otherwise nice home (because you cannot afford the electric bill).
Besides, it IS important to remember where you are blessed and how, if that only blessing is well, at least I'm still alive. However, I believe it's a mistake to follow it to the opposite end and start dismissing legitmitate complaints purely because someone, somewhere else, is worse off. Someone will always be better or worse off in many different ways. Compassion for ill luck, minor or major is better than dismissive attitudes. Also, the poorest person in the world can be the most fortunate under a certain set of circumstances and perspectives.
All the same, it is good to remember your blessings, but don't let that ruin your compassion for others with reasonable complaints and bad luck.