Crypto conversations collapse into religion almost immediately. Set the arguments aside and treat it as what it is for portfolio purposes: an extremely volatile asset with no cash flow and a short history. Everything useful follows from that description.

It cannot be valued conventionally

There are no earnings to discount and no coupon to capitalise. Like gold, the return depends entirely on future demand. Unlike gold, the history is measured in years, not millennia. Anyone quoting you a precise fair value is expressing a belief, not performing a calculation.

This does not make the value zero. It makes it unfalsifiable, which is a different problem — you cannot be proven wrong, so you cannot correct course.

The volatility is the whole design question

Crypto routinely does things equities do once a generation: 50%, 70%, 80% drawdowns, more than once. Any position must be sized on the assumption that it will, at some point, fall by most of its value and stay there for years.

That single assumption answers the allocation question. If a 1% position going to near-zero would not change your plans, 1% is safe. If a 20% position doing the same would wreck your retirement, 20% is not an allocation — it is a bet you cannot afford.

The diversification claim has weakened

Early on, crypto was pitched as uncorrelated. As institutional money arrived, it has increasingly traded like a high-beta risk asset — falling with equities in risk-off periods, only harder. It is not reliably the hedge it was marketed as; it is closer to leveraged exposure to the same sentiment.

Practical rules if you hold it

  • Size it so a total loss is survivable. This is the whole discipline. Most people who were hurt were not wrong about crypto — they were wrong about position size.
  • Rebalance. If it moons, sell back to your target. Booking gains is how a volatile asset actually contributes to a portfolio rather than becoming it.
  • Custody is a real risk. Exchanges have failed and taken client assets with them. "Not your keys, not your coins" is a cliché because it kept being true.
  • Tax rules are unforgiving and vary wildly. Track every transaction from day one.

Summary

You do not need an opinion on crypto's future to handle it correctly. Decide what you can afford to lose completely, hold no more than that, rebalance mechanically, and let the argument happen without you.