Patience, particularly in investing, is one of those virtues everyone praises but for which no one seems willing to pay.
An investment manager given money to manage is going to do the same thing with it pretty much every time: put the money to work.
This is true almost always and almost without reference to how attractive the alternatives are. Partly this is because the fund manager reasons that you would not have given him money if you wanted him to keep it sitting idle in a liquidity account, but also because most fund managers spend most of their time managing a specific kind of risk: career risk.
Even if they may be personally convinced that the markets they follow do not represent good value, the decision to stay in cash is personally risky for them. People don’t get fired for trailing the index by a point or two, but they do often if they miss a big rally.
That leaves most money managers with a perverse incentive; look like everyone else, take a few small bets away from the index you track and live to pay off your mortgage and fully fund your kids’ educations.