My goal is not to worry about running out of money........and, have enough for emergencies as I get older. So, I don't even think about what % I'll take out......I look at how much I've got, will I still have enough if the stock market gives us a number of lean years, will I have enough if they raise taxes.......and after thinking about everything, the most important question is, "do I have to worry?". Since I have kids and grandkids, since a stroke could send me into a long term nursing home, I think about the unexpected. The good news is I've been lucky, always LBYM and saved, saved, saved. But I THINK I'll need less than 2% so I'll probably have a bit left even if I live a long time. My mother was a worrier and so am I.......I just don't want to run out of money and worry that I'm a burden on anyone when I'm in my 80's or 90's.