Why not? You mean because you only have $100k? Or because you're already used to living with your parents in the trailer park and using a 17" monitor?
the downturn occurs when private equity deals end and the cheap money disappears. The yen carry trade has also contributed to the big gains in recent months as well. No bull market lasts forever. The markets are going on 5 years of gains, 100%+. I think a 10% correction is NOTHING after a 100% run.