RE: Rob's retiree letter.  Just proves how different people are, I guess.  Truly is "one man's opinion."
My opinion: 
#1: I don't know how much the financial industry says I need.  And I don't care.  I know what we need, and we've got it. 
#2: We are busy in retirement.  As if "busy" is a state we should all aspire to.  Me?  I'd rather be relaxed and happy.  
#3: Stress reduction. Got a lot less and I'm a different person because of it.  One reason: not so busy.
#4: It's not hard to "spend down".  With us, it's impossible, because for the 7 or so years BEFORE retirement, we spent so little we squeaked...and that's how we could afford retirement. (We were NOT an extreme case; many folks in their early 60s will have to really curtail their spending--and kill their debt--immediately if they have any hope of retiring within the next ten years.). Now, we're spending UP and loving it.
#5 Nope...neither wife nor I needed any time to know how we wanted to live.
#6 Nervous? Nah.  Couldn't wait.