Why does long-term holding carry two risks, not just "theft"? Because ownership of crypto is entirely tied to the seed phrase, and that key's fate can go wrong in two directions. One is falling into someone else's hands (stolen, phished); the other is no one being able to reach it (you lose it, or after an accident no one knows where it is or how to use it). A traditional bank has only the first risk, since accounts can be inherited via identity; crypto has both, and the loss from each is permanent and irreversible. Long-term holders must guard against both at once.
What does cold storage actually solve, and not solve? It almost entirely solves "stolen remotely" — the key always stays in an offline device, so even if a hacker breaches your computer or phone, they can't reach a key that never goes online. But it doesn't solve "loss": hardware devices break and get lost, and what they store is the private key, not the coins. What truly lets you restore the assets is the seed phrase. So cold storage is only half of security; the other half is backing up the seed so it's neither lost nor leaked — both must be done together to be complete.
How do you actually plan for inheritance? The core tension: trusted people must be able to obtain the seed after something happens to you, but can't touch it while you're alive. A few common approaches: One, split custody — divide the seed into parts given to different people or places, requiring them to be combined to restore. Two, seal the seed in a safe-deposit box or with a lawyer, paired with an instruction document that activates only under specific conditions (like a death certificate). Three, use a multisig wallet requiring multiple keys to move funds, handing one to family. There's no perfect scheme, but simply starting to plan beats "leaving nothing behind" by far.
Which checklist should a long-term holder follow? Four things. One: move large amounts to a cold wallet for offline storage, buying the hardware wallet through official channels. Two: make multiple seed backups, distributed across separate secure physical locations, achieving both not-lost and not-leaked. Three: design an inheritable mechanism (split custody / instruction document / multisig) so assets are reachable by family after something happens to you, yet not misused while you're alive. Four: keep complete purchase dates, prices, and transaction records, useful later for reporting, exiting, and passing on. Do these four and your long-term holdings are truly secure.