To answer the original question, ETF approval increases the likelihood I will start a position in BTC to 0.1%. The fact that Coinbase is the likely custodian knocks that back down to 0.001%.
The main use case for BTC (other than speculation and illicit activities) is theft and fraud. Having Blackrock as a sponsor does allay most of those concerns.
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But, I want to own great businesses. I don't have any interest in bonds, gold, commodities, art, or collectibles.
For me, the best thing about Crypto is that it diverts many of the speculators away from high quality businesses. The fact that y'all are getting rich quick off of Beenz 2.0 doesn't bother me. I'm okay getting rich slowly...
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Disclosure: I'm from the dotcom, Beanie Babies, Pogs generation. I'll let you get rich off your very wise investments in BTC. I just prefer great businesses at reasonable prices.