Insurance as Financial Architecture

Insurance is asymmetric risk transfer: financially rational when potential loss is large and irrecoverable but probability is low enough for affordable premiums. Insure catastrophic losses (health, liability, disability, death with dependents) and self-insure small losses (extended warranties, low deductibles). Most people invert this: over-insuring small risks (extended warranties) and under-insuring large ones (insufficient disability or umbrella coverage). Disability insurance is most under-purchased relative to importance—earning capacity is your largest asset, and long-term disability probability before 65 is roughly 25%.

When to use it

When reviewing insurance annually. When deciding whether to purchase optional insurance products. When your financial situation changes (new dependents, new assets, income changes). When a salesperson offers insurance on a product or experience and you need a decision framework.

How it can help

Clear insurance rules: (1) Always carry adequate health, disability, and liability coverage; (2) Raise deductibles as high as your emergency fund covers; (3) Never insure what you could replace out of pocket; (4) Add umbrella liability once you have assets to protect; (5) Term life if you have dependents, not whole life. These five rules optimize spending while ensuring catastrophic protection. The model reframes insurance from a product you reluctantly buy to a structural component of financial architecture that protects everything else you build.