What Insurance Is Actually For, and When to Skip It

Every insurance policy is the same transaction: you pay a known, small, certain cost to avoid an unknown, large, uncertain one. The insurer takes on your risk, pools it with thousands of other people's, and prices it so that on average they collect more than they pay out.

That last part is important, and it is not a criticism. It is how the model has to work. The consequence is that on average, across everyone, insurance is a losing bet by design. You are not buying an investment. You are buying protection from an outcome you could not otherwise absorb.

Once you see it that way, the decision rule becomes clear.

The rule: insure what you could not survive

Insurance is worth its cost when the potential loss would be financially catastrophic - when it would wipe out your savings, force you into debt you could not repay, or eliminate your household's income.

It is poor value when the potential loss is one you could absorb from savings without changing your life. In that case you are paying the insurer's margin for the privilege of avoiding an inconvenience.

This is why the same product can be essential for one household and wasteful for another. The variable is not the risk. It is your ability to absorb it.

Where this points

Usually worth it:

Health cover, because medical costs have effectively no ceiling
Liability cover, for the same reason - a judgment against you is not capped by what you own
Home or property cover, where the asset is a large share of your net worth and you could not replace it from cash
Income protection or life cover, where other people depend on your earnings

Usually not worth it:

Extended warranties on consumer electronics, where the maximum loss is the price of the item
Low-value item cover, phone insurance being the common example, where the annual premium plus excess often approaches replacement cost
Cover that duplicates something you already hold, which is more common than people realise - credit cards and home policies frequently include travel or item cover you are separately paying for
Life cover with no dependants, where there is no income stream to replace

Two things people get backwards

Buying more cover for small risks and less for large ones. It is psychologically easier to insure a $900 phone than to think about disability cover, but the phone is the loss you could survive. Attention and premium budget should follow severity, not familiarity.

Treating deductibles as something to minimise. A low deductible is not better protection - it is the same protection with more of the small losses shifted back to the insurer, at a price. If you can cover the deductible from savings, taking a higher one and keeping the difference is usually the stronger position. We go through the arithmetic in choosing an insurance deductible.

Self-insuring is a real option, with a condition

Choosing not to insure a risk is called self-insuring, and it is entirely legitimate - provided you actually set the money aside. Skipping a $300 annual premium and spending the $300 is not self-insuring. It is just being uninsured.

The honest version is to hold the reserve. If you would not fund the reserve, buy the policy.

Before you buy anything

Check what you already have. Employer benefits, credit card terms and existing policies frequently overlap
Read what is excluded, which tells you more about a policy than what is covered
Confirm the claims process and what documentation you would need
Check the insurer is licensed in your state through your state insurance department

The summary

Insurance is a tool for one job: preventing a survivable event from becoming an unsurvivable one. Judged against that job, most households are underinsured on the few risks that could ruin them and overinsured on the many that could not.

Sources

Current as of August 2026. Insurance is regulated at state level; availability and terms vary. This is general information, not a recommendation about any specific policy.