Exactly. My favorite answer is: The same thing gold is backed by.
Not exactly.
Bitcoin and gold are both backed by the same thing - their unparalleled utility as a medium of exchange satisfying Aristotle's prerequisites:
So you tell me "not exactly" and then you repeat my words? Huh?
Yes, but no. You were half right.
'Not exactly' referred to your assertion that "Bitcoin doesn't have backing." Bitcoin and gold are backed by their utility as ideal media of exchange.
I find that what one should see as ideal depends for some large part on the situation in which the currency is to be used.
Casinos have a different view on what is an ideal medium of exchange than, say, society as a whole.
So how do you define "ideal media of exchange" ?