I was pretty happy with this analogy:
Suggesting that you need to run a full node to protect yourself from the hash power majority is like suggesting that you need to wear, at all times, bulky and expensive arrow-stopping armor (that does nothing against a bullet) to protect yourself from being murdered by a guy with a high-powered rifle who isn't even your enemy. (Again, Bitcoin is premised on the idea that the hash power majority will be incentivized to protect the network's integrity.)
The idea that we should artificially constrain Bitcoin's transactional capacity, thereby making it dramatically more expensive and less reliable to
actually transact with Bitcoin, something that affects
every Bitcoiner and that is
absolutely fundamental to Bitcoin's money property -- in order to make it slightly cheaper for people to run a "full node," something that provides users with, at best, an
incredibly marginal improvement in security and that
99.9% of users will have no interest in doing
regardless of the cost -- is
insanity.
It's absolutely incredible that BS/Core's propaganda has managed to convince some people that this madness actually represents any kind of sensible tradeoff. It's like convincing someone they should always walk around with a piece of duct tape over their mouth and nose. Oh sure, it makes certain activities more difficult, you know, things like eating, drinking, talking, and breathing. But whenever a situation comes up where you need a piece of duct tape, boom, you've got one right there at your fingertips. Super convenient, right?
Although, I guess I can
sort of understand how they pulled it off. On the one hand, running a fully-validating node IS the only way to independently verify that ALL validity rules are being followed. So, at least on a superficial first glance, it does seem like it might be really important for everyone to run a full node, or at least be able to run one. How else could Bitcoin ever function as a "trustless" system, right? Until you dig a little deeper and recognize that a malicious / dishonest hash power majority can do just as much damage (in fact, more)
without mining any invalid blocks.
On the other side of the equation, they've managed to make concerns about transactional friction seem trivial in many people's eyes with their "coffee money"-type rhetoric. And there's a
kernel of truth to the rhetoric because, as I've pointed out before, Bitcoin's currently most important use cases
aren't particularly fee sensitive (and don't include general retail payments). But that doesn't mean that all use cases aren't being harmed. If you're someone who's buying 50 bucks worth of Bitcoin as a speculative investment which you're planning to hold for a few years, paying a two-dollar fee to transfer the funds to your own wallet is an immediate 4% "tax" on your investment. That's not trivial. Now some might scoff and say that 50 bucks isn't an "investment"-sized purchase, but for some people it absolutely is. And of course there are other people who might be doing 50-dollar weekly buys which they want to immediately transfer to their own wallet (because isn't avoiding counterparty risk sort of the whole point?). In addition to this kind of
direct harm to Bitcoin's utility from high fees,
there's also harm to Bitcoin's "virality" as it becomes increasingly impractical for holders to send their friends a few bits to get them started, and for new users to practice with and gain confidence in the technology. Finally, I'd identify "speculative harm" as a third, and very significant, category of harm. Prospective investors surveying the crypto landscape think to themselves: "well, Bitcoin's ledger is the first, most mature, and still the most valuable, and the Bitcoin 'brand' is the most dominant in the space -- all of which make the Bitcoin ledger a strong Schelling point for the market to ultimately converge on. But on the other hand, they
still haven't increased their absurdly-tiny block size limit which is leading to an increasingly shitty user experience and hemorrhaging market share. So their current governance looks completely dysfunctional as their existing stakeholders seem bizarrely content to squander their first-mover / network effect advantage. Hmm, maybe I should consider investing in some of the alternatives instead -- or at least hedging with them heavily."