Stores of value tend to have high liquidity. I hate the analogy, but a single exchange (or a series of exchanges) going down doesn't prevent you from selling your gold. Your preferred method of selling gold may be temporarily unavailable, but it'll be back.
Meanwhile, keeping with that analogy, actually selling gold takes quite a long time when you hold the physical asset yourself, and the fees are not small there either, as validation needs to be performed to confirm the gold you're supplying is authentic.
Truly, I hate the analogy, because digital assets like this are supposed to be better, not just as bad, as their physical counterparts.
