Selfish baby boomers?

This article slams baby boomers for being selfish because they are (supposedly) rich and not planning on leaving it to their kids.  They are planning on spending their money in retirement.

I don't understand why people are expected to leave things to their kids.  I understand that once upon a time you left your farm, trade or store to the kids and it became their livelihood but in today's world, that's the same as giving them a good education.  Why are parents expected to also fund their kids' retirements?

Mom, Dad, thanks for the great education.  Please spend all your money as you wish and enjoy your retirement!  (But anytime you want to babysit ... ;)