Earlier quoted context omitted.
I'd go a step further with the comparison to gold. If everyone would stop mining gold today, gold would retain value (or perhaps even go up in value). On the flipside, if we turned off all bitcoin miners today, bitcoin would go to zero instantly (as its worthless without continuous resources being pumped into it). This is why I'm sympathetic to those who say its ponzi scheme, it only has value because of new resource…
Nitpicking but >if we turned off all bitcoin miners today, bitcoin would go to zero instantly isn't true. You couldn't trade them normally with the miners off but you could start mining up the day after - it only takes a couple of computers really.
"Well yea you could do that change to tank the value, but imagine if you just undid it huh???"
The point was without mining entirely, there is no value