My 3 mentors have been in business a combined 95 years and they're still buying for what it's worth. They obviously took a step back with down-cycles, but long term debt and sound investing principals got them through without having to sell anything, which is also my train of thought when investing.
We will just have to agree to disagree, cash will be king if it falls off a cliff like it did back in '08, but what if it doesn't? You are losing close to 7% on the cash you're currently hoarding with the current rate of inflation. If you're well capitalized and have significant reserves I'd prefer to lock in long term debt with today's dollars and pay it off with future dollars that are worth less.
The amount of capital gains as well as depreciation recapture that many investors would have to pay if they sold everything into a cash position is astronomical and should be a part of the decision. You sound like you're comfortable with what you're doing, but you don't know with absolute certainty that it is going to fall off a cliff, just like I don't know with certainty that it's not. Plenty of ways to skin a cat, good luck man!