These are true, and they are funny, but I do think we should watch out and not rob people from their right to feel bad about something. Many people in the 1st world have terrible amounts of suffering and on top of that feel guilty because they think that their suffering is nothing compared to that of people in 3rd world countries. By contrast, people in for example Ethiopia are generally positive minded and make the most out of what they have and tend to live a much simpler life. Personally, if I look beyond the obvious fact that I'm used to my life the way it is, I have no strong preference to be born where I am as opposed to some poor area. I imagine you can be pretty sad if you're watching tv and there's commercials on all channels, even though you're a total rich spoiled fat European/American.
That said, it is good to be reminded of our wealth so that we'll give more to charity - I think poor people know better what to do with wealth than rich people