I can't recall ever once having seen the name of a market timer on Forbes' annual list of the richest people in the world. If it were truly possible to predict corrections, you'd think somebody would have made billions by doing it.
You just don't know when you can find the bottom.
The simpler it is, the better I like it.
Most investors would be better off in an index fund.
When you sell in desperation, you always sell cheap.
Investing in stocks is an art, not a science, and people who've been trained to rigidly quantify everything have a big disadvantage.