My thought on Bitcoin has long been about asymmetry, it could go to a bazillion or go to zero. A small amount invested could have a huge payoff. I am far from a true believer however. I own some spread across a few accounts. I bought at a pretty low price in Dec of 2018. Later, I sold a little and have bought back in here an there but am a few bucks below where I topped out.
1. It could be replaced
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From the start, one source of skepticism from me has been that all of its supposed attributes could ascribe to some yet to be created token/network. To the extent it is a network, why couldn't something better come along?