@rorr - Uhm, yes, your point? I did say I was living on 5-7k/year.
Everybody can run their own spreasheets for their personal income and tax situation presuming an expense level of 6k/year. Figure an investment return of 3%+inflation (so 6% or so total). See what you get.
1) Starting from zero (because where else would we start for this analysis?)
2) We save $26,000 per year (2,166.7 per month).
3) Assume 6% return.
4) It takes about 5 to 6 years to get to $175,000.
Makes sense, a retirement fund that covers 7,000 per year in living expenses (i.e. about $175,000), takes only about 5 years of saving $26,000 per year (and conservative investing).
Quick and easy math here: http://www.math.com/students/calculators/source/compound.htm