We're in agreement on the general idea of a cost-benefit analysis for security, but your numbers are a bit off. 250BTC is worth over $1M USD (especially if you

We're in agreement on the general idea of a cost-benefit analysis for security, but your numbers are a bit off. 250BTC is worth over $1M USD (especially if you owned it as of Aug 1 and thus also have 250 Bitcoin Cash). Breaking into your house to steal a hardware wallet has a significant cost/risk in many people's minds. If someone is willing to break into your house, they're probably also willing to beat you senseless until you transfer them your bitcoin, because you surely value it less than your own life. That's why I think the cost to defeat hardware is high in general, but not especially relevant if your threat model includes targeted attacks.