I decided to compile a list of short rebuttals to the criticisms nocoincers often use to attack crypto , just in case you might need it.

1.Crypto is open source, anyone can just make a 'new bitcoin' or a 'new ethereum', then what's the value?

Rebuttal: Nobody's going to stop you from creating the next Google or Facebook. Are you gonna create a 2 billion userbase network effect out of thin air too?

1. Crypto is backed by nothing. It has no intrinsic value.

Rebuttal: Fiat money isn't backed by anything either. What gives it value is the trust in governmental stability and the demand for it. Crypto is backed by computer code and also by the demand side.

1. Crypto is a ponzi scheme.

Rebuttal: A ponzi scheme is a scheme in which the owner uses the funds of the previous comers to pay for the newcomers until the new comers arrive in sufficient numbers for the owner to cash out and abandon the scam. By that definition, none of the top 5 cryptocurrency can be called a ponzi scheme. There are indeed cryptos that operate like a ponzi scheme, and those tend to disappear quickly.

1. Bitcoin is used by criminals.

Rebuttal: Since all transactions are visible forever on the blockchain, most criminals prefer to use the US dollars.

1. Crypto is slow, fees are high.

Rebuttal: Remember how expensive and slow it was to use dial up internet? Debating between 56kbs and 64kbs modems? Yeah, during those times savvy investors already invested into the underlying technology because they saw the tech as it would become, not as it was.

1. There is no adoption! Nobody uses crypto. My grandma doesn't use it.

Rebuttal: Crypto has only existed for 12 years. During those 12 years it's become the fastest grown asset in human history. It took institutions 7-9 years to adopt it. It took 12 years for a sovereign nation to adopt it into law. Blockchain developers are some of the best paid developers on the planet. Crypto is getting adopted at a far faster rate than the internet ever did.

1. Crypto is destroying the planet!

Rebuttal: Most of the top cryptos except for Bitcoin will not be mined, but will move to PoS or other forms of network security. Ethereum, the second largest crypto, will only use POW for 9 to 12 months more at best, and once it moves on from POW, it will cut its electricity usage down 99%. Bitcoin miners now have incentives to leave China and seek clean energy sources.

1. Governments can shut crypto down.

The peer-to-peer nature of crypto can make it extremely difficult to shut down, especially POS cryptocurrencies, which don't require massive mining facilities to run. The United States, with a SEC chairman who deeply understands crypto and blockchain, and incentives from Florida and Texas to facilitate crypto businesses, do not seem to indicate that crypto will be strangled.

1. China controls crypto. Bitcoin is owned by Chinese mining companies.

They aren't anymore. They willingly gave up that monopoly and forced their best crypto businesses out, right into the US' hands.

1. Crypto is too volatile.

Crypto is the only asset in human history that managed to grow to $2 trillion in 12 years. It is also trading 24/7 world wide. It is an unregulated market. In addition, nobody in the world has realized the true potential of cryptocurrency yet. So it makes sense for crypto to fluctuate wildly. In time, the volatility of crypto will decrease as it gets adopted. But for many people, volatility is an opportunity.

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So these are just the arguments I feel like they'd be the most compelling to give back to the doubters. Of course you can't always address every criticism against crypto. Nothing is ever 100% perfect and your goal isn't to defend crypto 100% acting like there isn't any problem with it. This is merely a guide for you to use when you hear people complaining or attacking crypto based on what they usually hear from CNBC nincompoops.