Sitting in cash is not a defensive position, it's offensive and a highly risky one at that. When fiat, is losing 5-6% on average every single year, you can't afford to wait for the right moment to jump into equities. You have to be in it now, whether the valuation suits you or not. This of course exacerbates risk for everyone and forces everyone into risky positions because cash is now more risky than nearly all the other risky bubbles out there.