Part 4

Going Further

Chapter 15

What About Crypto?

Cryptocurrency symbols floating in a digital landscape

Crypto is different from everything else in this guide. When you buy cryptocurrency, you're not buying a piece of a company. You're buying digital assets — a completely new type of money and technology.


What makes crypto different?

Cryptocurrencies are decentralized. That means no government controls them, no bank manages them, and no company can shut them down. They run on blockchain technology — a public, transparent record of every transaction that anyone can verify.

Unlike stock markets that close on weekends, crypto markets are open 24/7. You can buy, sell, or send crypto at 3 AM on a Sunday if you want to.

Stocks controlled by banks with 9-5 hours vs crypto decentralized and open 24/7 — no bank, no government, no off switch

Two cryptocurrencies have proven themselves

There are thousands of cryptocurrencies out there. Most of them are worthless. But two have stood the test of time: Bitcoin and Ethereum.

Both have been around for over a decade. Both have survived multiple crashes — some devastating — and come back stronger every time. And both are now part of mainstream investing, with ETFs approved in the US and Europe.


The risk/reward spectrum

Everything in this guide so far has been about ETFs — steady, reliable, proven over decades. Crypto is the opposite end of the spectrum: volatile, unpredictable, but with returns that dwarf everything else.

Here's what happens if you invest €250 per month for 20 years at different historical return rates:

InvestmentMoney invested20-year value
ACWI ETF (~8%)€60,000~€147,000
S&P 500 (~12%)€60,000~€230,000
Nasdaq (~15%)€60,000~€360,000
Bitcoin (~30%)€60,000~€1,300,000
Ethereum (~40%)€60,000~€3,500,000
Bar chart comparing 20-year projected returns of ACWI, S&P 500, Nasdaq 100, Bitcoin, and Ethereum with 250 euros monthly investment

The difference is staggering. But so is the ride — crypto can drop 50–80% in a bad year. You need serious conviction and a strong stomach to hold through that.

ETFs show a smooth upward line while crypto shows a wild zigzag — same destination, different ride

How to think about it

  • ETFs are the foundation — steady, reliable, proven
  • Crypto is the optional turbo boost — high risk, high reward

If you're brand new to investing, start with ETFs first. Get comfortable with the process. Learn what it feels like to watch your money go up and down. You can always add crypto later.

Once you're comfortable, even a small allocation — say 5–15% of your portfolio — can significantly boost your long-term returns.

Key takeaway

Crypto is high-risk, high-reward. ETFs are the foundation — crypto is the optional turbo boost. The next two chapters cover the two proven winners: Bitcoin and Ethereum.