I would be quite worried about advances in quantum computers if I had any Bitcoin after watching this DEFCON talk: https://www.youtube.com/watch?v=OkVYJx1iLNs
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Cryptocurrencies would be the last thing I worry about w.r.t Quantum crypto attacks. Everything would be broken. Think banks, brokerage accounts, email, text messages - everything.
https://radar.cloudflare.com/adoption-and-usage
In contrast, cryptocurrencies have to upgrade the entire network all at once or it’s effectively a painful fork. That effort appears to just be getting talked about now, without even starting to discuss timing:
Bitcoin is much more centralized than the popular imagination would have you believe, both in terms of the small number of controlling interests behind the majority of the transaction capacity, and just as importantly the shared open source software running those nodes. Moreover, the economic incentives for the switch are strongly, perhaps even perfectly, aligned among the vast majority of node operators. Bitcoin is already dangerously close to, if not beyond, the possibility of a successful Byzantine attack; it just doesn't happen precisely because of the incentive alignment--if you're that large, you don't want to undermine trust in the network, and you're an easy target for civil punishment.