I am always surprised when I hear people say this. I don't really think they believe it themselves, or they might think that way when it benefits them. If you think 1 BTC = 1 BTC, and it will always be 1 BTC, then the same logic should be used in situations that don't benefit you.

Let's make it easy and say that at one time in the past, you had to pay 1 BTC for a USB drive. We are going back to a time when 1 BTC = 1 USB drive.