Re: Your opinion,please?
I agree with John Galt: Adjust to the amount.
It is exceedingly dangerous today even to count on that 4%. The markets are still in bubble territory. That 4% number never included anything like this during the first two decades of a retirement.
Having said that, I do think that you can reach 4% safely enough, but not with a simple S&P500 and commercial paper, fixed allocation portfolio. Look at additional asset classes. Pay careful attention to income streams. A guaranteed income source (at a reasonable income after adjusting for inflation) is worth a lot in retirement.
Done right and in the right market, residential real estate can be a tremendous investment. Done wrong or if not appropriate for your personality, it can be a disaster.
The most important thing is to avoid is selling stocks at depressed prices if at all possible.