I find this topic interesting because I have wrestled with it so much personally.
There was a guy on this forum a while age (oldage pensioner?) who RE'd with a $2mil portfolio and went back to work. It seemed like it was mostly just a pervading sense of insecurity. I'd like to avoid that feeling, even if the tide sometimes seems to be running in the wrong direction.
In my case, I have decided to do 2 more construction seasons. The upside is I have winters to ski. Also, the numbers were so compelling--
current retirement (at 55--I am presently 53) $30,800/yr--if I take it early I lose 6%/year
with 1 more construction season (estimated, @ 55) $40,000/yr
with 2 more seasons (pull the plug 11/07, wait until 2/08 when 55) $50,000/yr
I could go yet another season after and get it up to $57,000-$58,000/yr, but it would really bother me not to be drawing on that pension once I am 55 years old, since the amount is not adjusted for taking it "late".
These numbers are the result of a lot of flukes of the system converging and how the average compensation is calculated (beware of engineers flogging spreadsheets....they can do serious damage).
Yes, there are always uncertainties. In my case, I am retiring in Canada with a US pension. So the "Bush Tax" (declining US dollar) is whittling away at my assets and pension if they are evaluated in Canadian dollars. But 2 more seasons allows me to burn my mortgage and fund my sons university (at least to the level I am willing to fund them). So it seems to work out.
If I decided to go one more construction season, I would start wondering about myself....at that point I would give Nords permission to fly to Alaska and beat me over the head with a surfboard.
As for the "mistress of inertia", seems like a good name for a heavy metal band. Or the start of a bad fish joke never mind...