your return could easily be zero or negative if you bought SPY yesterday (friday). it depends on timeframe.
the only people that bought in, in 2000 were greedy$$$ people. they always buy in at the top.
now i know why someone like stock777 has over 2,415 posts and has been on elitetrader.com for more than 4 years (over 1,460 days). that's almost 2 posts a day nonstop for the past 4 years.