I understand the issue raised here well.
My wife and I have lived below our means for years, and we've invested well.
The net result is that our retirement income will be at least what we're making now and probably more, (even before social security).
I've already created a trust for my children and (unborn) grandchildren, but doubt that I will be comfortable spending a whole lot more than I have monthly on average for the past almost 40 years. But, then again, I may surprise myself. Work has been the focus of much of my life, and I've only been to Europe twice, Australia and South Africa once, etc ...
August 1, 2008, is the final-final retirement date at age 61. (Someone may recall that I had said it would be February 1, 2007, but an interesting opportunity in a distant state seemed [and was] worth taking a detour for.)
Given the highly responsible nature of most posters to this site, I suspect there are others in the same pleasant position -- at least I hope so. Like me (and Martha who announced her retirement on another site today), I suspect many of those are gearing down even now.