Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Is insurance worth it if you can afford to replace the item? If not, when is it?
The key point to answer the question is to consider risk aversion. Assume I suggest a game to you: Throw a coin and if you win, you get $5, if you lose nothing happens. Will you play the game? Of course, you will - you have nothing to lose! What if I suggest this: If you win, you get $10,000,005 and if you lose you must pay $10,000,000 (I also accept cars, houses, spouses, and kidneys as payment). While the expected value of the second game is the same as for the first, if you lose the second game you are more or less doomed to spend the rest of your life in poverty or not even have a rest of your life. Therefore, you will not wish to play the second game. Well, maybe you do - but probably only if you are very, very rich and can easily afford a loss (even if you had $11,000,000 you won't be as happy with a possible raise to $21,000,005 as you'd be unhappy with dropping to a mere $1,000,000, so you'd still not like to play).  Some model this by taking logarithms: If your capital grows from $500 to $1000 or from $1000 to $2000, in both cases it doubles, hence is considered the same "personal gain", effectively. And, voíla, the logartithm of your capital grows by the same amount in both cases. This refelcts that a rich man will not be as happy about finding a $10 note as a poor man will be about finding a nickel.  The effect of an insurance is that you replace an uncertain event of great damage with a certain event of little damage. Of course, the insurance company plays the same game, with roles swapped - so why do they play? One point is that they play the game very often, which tends to nivel the risks - unless you do something stupid and insure all inhabitants of San Francisco (and nobody else) against eqarthquakes. But also they have enough capital that they can afford to lose the game. In a fair situation, i.e. when the insurance costs just as much as damage cost multiplied with probability of damage, a rational you would eagerly buy the insurance because of risk aversion. Therefore, the insurance will in effect be able to charge more than the statistically fair price and many will still (gnawingly) buy it, and that's how they make a living. The decision how much more one is willing to accept as insurance cost is also a matter of whether you can afford a loss of the insured item easily, with regrets, barely, or not all.