Why Buy Bitcoin

Andy Edstrom's Why Buy Bitcoin is one of the few books that frames Bitcoin specifically as an asset for a traditional investment portfolio. Edstrom is a CFA and CFP working in wealth management, and the book reads like a long, well-organized client memo: monetary history, the case for sound money, an explanation of Bitcoin's mechanics, an honest discussion of the risks, and a chapter on how much of a portfolio (if any) might reasonably be allocated to it.

Who it's for

Investors, advisors, and finance-adjacent professionals who can read a balance sheet but have never owned a satoshi. It's also useful for sceptical family members who tune out anything that sounds like a manifesto but will read something framed as a measured portfolio argument. Already-converted Bitcoiners may find the early chapters covering ground they know.

What it does well

The framing is the book's strongest asset. Edstrom takes Bitcoin's case seriously as an investment thesis — comparing it to gold, equities, and real estate on the dimensions a portfolio manager actually cares about (correlation, volatility, drawdown behaviour, monetary characteristics) — without pretending the answer is obvious. The chapter on portfolio construction, with explicit allocation scenarios and the math of asymmetric upside, is the cleanest version of that argument in print. He cites Greer, Buffett, and Dalio on monetary history without sneering at any of them, which is rare in this genre.

Where it falls short

The book is from 2019, when Bitcoin was around $8,000, and the macro chapters are explicitly framed against the pre-pandemic environment. Some of the inflation-and-debt arguments that felt theoretical then have aged in interesting ways post-2022, but the book doesn't get to engage with that data. As an artifact of the pre-pandemic case for Bitcoin it's still useful; as a current-conditions guide it's stale.

Edstrom is also a Bitcoiner, and while he's careful not to oversell, the framing is one-sided. Ethereum and the rest of crypto exist as something to be dismissed in a paragraph. The treatment of Bitcoin's risks — particularly governance risk, the dependence on a small core developer community, and the political vulnerabilities of mining concentration — is thinner than the upside chapters. Read it for the portfolio-construction framing; supplement it elsewhere for serious risk analysis.