The WHY of Insurance -
Because losses, damages, injury, accidents, and illness only have to happen once to justify the cost of having insurance. The appropriateness of a policy is determined by how an asset / event that is insured is defined and this is the most important consideration when buying a policy as it can be the difference between having cover and not having cover.
One such example is the definition of a heart attack i.e., was there pain whilst experiencing the heart attack as some insurance policies will NOT cover the event unless there is pain and in some cases a heart attack can be experienced without pain; another definition is the replacement of household assets and the need to make sure that compensation covers old for new, regardless of the age of the asset.
These are just two simple examples of how the definition of an insurable asset or event needs to be considered before taking up an insurance policy.