Have you run the numbers on where you'd be at if you had invested throughout, rather than deciding you were right and the market was wrong?
FWIW, I agree with you, but I'm still invested, because it's better than trying to guess when or if we'll be right. There's nothing saying there has to be a crash--slow growth for years until underlying fundamentals catch up is completely plausible, and would leave you uninvested completely, indefinitely.
As the saying goes, the market can stay irrational longer than you can stay solvent.
Or what if it climbs 50%, then crashes 20%? Heck, I was thinking similar to you in 2010 (but didn't act on it, luckily) and look at the growth since then. If a crash happens, it won't necessarily retrace all of that, meaning investing would have been the better choice.
In other words, you could be right in your analysis, but still come out behind monetarily because of how the market behaves.
Some things to think about, at least. Congrats on the 300k mark! :)