What problem was Bitcoin actually trying to solve?
On October 31, 2008, Satoshi Nakamoto attached a white paper to an email. Its title: "Bitcoin: A Peer-to-Peer Electronic Cash System." Note — the title contains no words about "investment," "appreciation," or "getting rich."
What happened that year? The Fed and central banks worldwide printed money frantically to rescue the markets; ordinary people's savings shrank under inflation, while the banks that caused the crisis got government bailouts. What Satoshi wanted was a monetary system that needed no central bank and couldn't be over-issued.
Bitcoin's core design is simple: a total supply of 21 million, never increased; production halved every four years, mimicking gold's scarcity; anyone can run a node and join the bookkeeping, needing no one's permission. Its philosophical core is one sentence: I trust math, not people.
Fifteen years on. From 10,000 BTC for two pizzas in 2010, Bitcoin reached being named legal tender in El Salvador and included in allocations by institutions like BlackRock. You can say its volatility makes it a poor currency, you can say it wastes electricity — but one thing can't be denied: it is the first successfully running decentralized monetary system in human history. Like it or not, since it launched on January 3, 2009, that network has never been down a single day.
The reasons for its stigma are direct too: early on, people did use it on the dark-web "Silk Road" to buy drugs; its violent price swings created huge bubbles and bankruptcies; mining's power use has been attacked repeatedly. But if we abolished cash because it's used in crime, or shut down the internet because it hosts scams — there'd be almost nothing left in this world.
Every major cryptocurrency was born to solve a real problem — they aren't scams, they're answers.
Why is Ethereum called the "world computer"?
In 2013, a 19-year-old Russian-Canadian named Vitalik Buterin spotted a problem: Bitcoin could only do one thing — transfer value. He thought: what if a blockchain could not just record "who sent whom how much," but also run programs?
That's the origin of the smart contract. Once code is deployed on the blockchain, as long as preset conditions are triggered, it executes automatically — no one, not even the person who wrote it, can interfere midway. Example: you borrowed 100 yuan from me, due in a month with 5% interest. The traditional world needs a contract and a lawyer. On Ethereum, it becomes a piece of code that auto-deducts from your wallet on the due date.
Ethereum's ambition isn't to be "a better Bitcoin" but a decentralized global computer. On this computer you can build banks (DeFi lending protocols), organize companies (DAOs), issue art (NFTs). Developers come from all over the world; no one needs to apply for an account or get approval — as long as you can write the code, the stage is yours.
In 2022, Ethereum completed a massive upgrade called "the Merge" — switching from energy-hungry proof-of-work to proof-of-stake, cutting energy use by 99.9%. This answered the environmental criticism and paved the way for future scaling.
The most misunderstood thing about Ethereum: many treat it as a "payment tool" and then complain gas fees are too high. That's like complaining a flight to the next street to buy groceries is too expensive — it was never built for that. Ethereum is infrastructure; the applications running on it are what face users.
Monero — why is it cursed the most?
Before Monero, a question: would you be willing to make all your bank-card spending records public to the whole world?
Your salary, your rent, who you sent money to, which days you spent more or less — fully transparent, anyone could look it up. You'd probably refuse. But that's Bitcoin's actual situation: Bitcoin's ledger is completely public. Every transaction's amount, sender address, receiver address — all written on-chain. Addresses don't directly map to real names, but the moment one transaction ties to your real identity, your entire money flow is exposed.
Monero exists to solve exactly this. Using three core technologies — ring signatures hide the sender, stealth addresses hide the receiver, RingCT hides the amount — it makes all three key elements of a transaction invisible. This is Monero's design intent: to make digital cash truly cash-like, with privacy.
When you slip a friend 100 yuan in cash, no third party knows about it. Monero aims to do exactly that — cash-level privacy in the digital world.
Of course criminals exploited this. Ransomware hackers demanded Monero; dark-web markets moved from Bitcoin to Monero. But privacy technology itself isn't evil. Cash is also used in crime, the encrypted messenger Signal is used by drug dealers, the Tor network is used for illegal trade — we don't therefore ban cash, encrypted messaging, or onion routing.
Exchanges in several countries have delisted Monero, citing anti-money-laundering compliance. That's understandable. But worth pondering: in an era where data is collected without bottom line and every purchase is tracked, privacy has gone from luxury to necessity. Monero proved one thing — cryptography can protect ordinary people's financial privacy. And the mere existence of this technology is a check against the expansion of surveillance.
In closing
Fear comes from not understanding. The domestic negative impression of crypto largely stems from the 2017 ICO chaos. But if we're willing to spend a little time reading Satoshi's own words in the Bitcoin white paper, looking at the thousands of applications running on Ethereum — you'll find they aren't scams, they're different problem-solvers.
The crypto world has real substance, but its role is "vanguard," not "home base." Hand the adventure to the 3% alternative-asset slice, hand stability to Hong Kong insurance — that ratio is the clearest posture for ordinary families facing the new world.