A typical exam question asks for the pros and cons of moving from traditional money to cryptocurrency.
Advantages
- Decentralised: no single bank or government can freeze accounts, devalue the currency by printing more, or block specific transactions.
- Fast international transfers: cross-border payments settle in minutes, not days.
- Low fees (in periods of low congestion) compared to international wire transfers.
- Open ledger: anyone can audit the chain to confirm that the supply rules are being followed.
- Pseudonymous: users do not have to reveal their real identity to send or receive funds.
- Programmable: smart-contract blockchains (Ethereum and others) let people build automated financial agreements, marketplaces and games on top of the same chain.
Disadvantages
- Highly volatile prices make cryptocurrency awkward for everyday spending and risky as a savings instrument.
- Irreversible transactions: if you send money to the wrong address (or to a scammer), there is no central authority that can refund you.
- No consumer protection: no equivalent of a chargeback when goods are not delivered or services not provided.
- Environmental cost: proof-of-work mining (especially Bitcoin) consumes huge amounts of electricity, often from non-renewable sources.
- Used for illegal activity: anonymity has made cryptocurrencies popular with ransomware, fraud, dark-web marketplaces and money laundering.
- Technical literacy required: managing wallets, private keys and addresses is unforgiving. A lost private key means lost money, permanently.
- Regulation varies and is changing: some countries ban or restrict crypto; tax treatment is complicated and inconsistent.
- Scaling limits: most blockchains can only process a small number of transactions per second compared to traditional payment networks (Visa handles thousands per second; Bitcoin handles a handful).
When cryptocurrency makes sense and when it does not
| Use case | Better choice |
|---|
| International remittances (sending money home from abroad) | Cryptocurrency can be fast and cheap |
| Paying for a coffee | Traditional currency (volatility and slow settlement make crypto awkward) |
| Long-term savings | Traditional savings account or stable investment (crypto is volatile) |
| Avoiding a failing local currency in hyperinflation | Cryptocurrency or a stablecoin can be a useful hedge |
| A reversible payment to a new online seller | Traditional currency, because of chargeback protection |
| Tipping a content creator anywhere in the world | Cryptocurrency works well for tiny, instant, cross-border payments |