Anya Kamenetz has an excellent book called "Generation Debt" about this subject in the US, and she has a very US-centric blog at http://anyakamenetz.blogspot.com/
It's getting ridiculous. The Irish government has a relatively well-managed fund that's supposed to cover the deficit, but we're still not doing enough to resolve the situation.
I love work, and I can't imagine retiring completely at 55 or 65. It drives me crazy to see people who have so much to contribute to society retiring at such young ages.
Yes, it's their choice, but not when they expect younger generations to pick up the cheque.