Jamie Dimon is just one finance leader not buying the bitcoin hype as it heads back to its record high. Here are 18 other skeptics.

They're highly volatile — see bitcoin — and therefore not really useful as a store of value and are not backed by anything.It's more a speculative asset that's essentially a substitute for gold rather than for the dollar.March 2021Source: CNBC$BTC is a speculative bubble that poses more risk than opportunity despite most of the proponents being correct in their arguments for why it is relevant at this point in history.March 2021Source: InsiderI don't think that bitcoin is widely used as a transaction mechanism.It's an extremely inefficient way of conducting transactions, and the amount of energy that's consumed in processing those transactions is staggering.February 2021Source: InsiderCryptocurrencies basically have no value and they don't produce anything. They don't reproduce, they can't mail you a check, they can't do anything.And what you hope is that somebody else comes along and pays you more money for them later on, but then that person's got the problem.In terms of value: zero. February 2020Source: InsiderI was more optimistic about crypto or bitcoin about five or six years ago. So far, what I've seen is 99% ... let me be charitable, 95% fraud, hype, noise and confusion.August 2021Source: InsiderI do think people get bought into these manias, who may not have as much money to spare, so I'm not bullish on bitcoin, and my general thought would be that, if you have less money than Elon, you should probably watch out.February 2021Source: InsiderBitcoin is a highly speculative asset which has conducted some funny business and some interesting and totally reprehensible money laundering activity.January 2021Source: InsiderI don't welcome a currency that's so useful to kidnappers and extortionists, nor do I like just shoveling out a few extra billions and billions of dollars to somebody who just invented a new financial product out of thin air.May 2021Source: InsiderEven though I'm a pro-crypto, pro-bitcoin maximalist person, I do wonder whether at this point bitcoin should also be thought of in part as a Chinese financial weapon against the US.It threatens fiat money, but it especially threatens the US dollar and China wants to do things to weaken it.April 2021Source: InsiderI wish all this passion and energy that went to crypto was directed towards making the United States stronger.It's a jihadist call that we don't believe in the dollar. What a crazy concept this is, that we as a country embrace so many bright, young, talented people to come up with a replacement for our reserve currency.October 2021Source: InsiderBitcoin is an example of a cryptocurrency that doesn't serve the role of money at all. It's a very speculative investment class.In terms of substituting for what money is, I don't think it comes close.April 2021Source: BloombergThe total failure of bitcoin in becoming a currency has been masked by the inflation of the currency value, generating (paper) profits for large enough a number of people to enter the discourse well ahead of its utility.June 2021Source: InsiderIt's not a convenient medium of exchange; it's not a stable store of value; it's definitely not a unit of account.Its value rests on the perception that it's a technologically sophisticated way to protect yourself from the inevitable collapse of fiat money, which is coming one of these days, or maybe one of these centuries.Or, as I say, libertarian derp plus technobabble.May 2021Source: InsiderHaving no clear fundamental value and largely unregulated markets, coupled with a storyline conducive to delusions of grandeur, makes this more than anything we can find in the history books the very essence of a bubble.January 2018Source: BloombergI'm probably more in the Jamie Dimon camp. — in reference to Dimon calling bitcoin worthless.October 2021Source: InsiderFundamentally, bitcoin is not a currency. It's not a unit of account, it's not a scalable means of payment, and it's not a stable store of value.Calling them cryptocurrencies is a misnomer, they're not even assets.February 2021Source: InsiderBlockchain technology could change our world more than people imagine. Bitcoin, however, could be a bubble.June 2018Source: InsiderGiven the volatility of the asset value, and given the fact that there isn't a real asset underpinning them ... I'm afraid if you want to buy them, then please understand that you can lose — you could lose all your money.June 2021Source: Insider

Jamie Dimon is just one finance leader not buying the bitcoin hype as it heads back to its record high. Here are 18 other skeptics.

1. Jerome Powell

2. Michael Burry

3. Janet Yellen

4. Warren Buffett

5. Neel Kashkari

6. Bill Gates

7. Christine Lagarde

8. Charlie Munger

9. Peter Thiel

10. Ken Griffin

11. Gita Gopinath

12. Nassim Nicholas Taleb

13. Paul Krugman

14. Jeremy Grantham

15. Larry Fink

16. Nouriel Roubini

17. Jack Ma

18. Andrew Bailey