In my past life I worked as a licensed Life & Health Insurance Agent.
You might want to look at this link on "Universal Life Insurance".
Universal Life Insurance Definition | Investopedia
Definition of 'Universal Life Insurance'
A type of flexible permanent life insurance offering the low-cost protection of term life insurance as well as a savings element (like whole life insurance) which is invested to provide a cash value buildup. The death benefit, savings element and premiums can be reviewed and altered as a policyholder's circumstances change. In addition, unlike whole life insurance, universal life insurance allows the policyholder to use the interest from his or her accumulated savings to help pay premiums.
Investopedia explains 'Universal Life Insurance'
Universal life insurance was created to provide more flexibility than whole life insurance by allowing the policy owner to shift money between the insurance and savings components of the policy. Premiums, which are variable, are broken down by the insurance company into insurance and savings, allowing the policy owner to make adjustments based on their individual circumstances. For example, if the savings portion is earning a low return, it can be used instead of external funds to pay the premiums. Unlike whole life insurance, universal life allows the cash value of investments to grow at a variable rate that is adjusted monthly.
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It's a combination of a Term Life policy with an Annuity rider that gains value and earns interest that you can either borrow from or cash out at a later date. (If memory serves me correctly. It's been over 20 years since I was an active agent.)
Now read through this and you'll see that they are very similar. (If you live to be 100 years old the Whole life Policy will pay out it's face value to you even though you didn't die. I noticed that this bit was left out of the explanation at Investopedia. Lulz )
Traditional Whole Life Policy Definition | Investopedia
Definition of 'Traditional Whole Life Policy'
A type of life insurance contract that provides for insurance coverage of the contract holder for his/her entire life. Unlike term life insurance, which covers the contract holder until a specified age limit, a traditional whole life policy never runs out. Upon the inevitable death of the contract holder, the insurance payout is made to the contract's beneficiaries. These policies also include an investment component, which accumulates a cash value that the policyholder can withdraw or borrow against.
Investopedia explains 'Traditional Whole Life Policy'
This type of life insurance provides the policyholder with a guaranteed amount to pass on to his/her beneficiaries, regardless of how long he/she lives, provided the contract is maintained. Most policies also offer a withdrawal clause, which allows the contract holder to cancel his/her coverage and receive a cash surrender value.
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When I was an Independent Insurance Agent, I worked out of an office with an Investment Broker who held a Series 7 license and if a client was looking for an investment I would send them his way. "I" did not like to use INSURANCE as an investment vehicle. (I seem to recall that for certain types of Annuities an Insurance agent needed to have a Series 6 License to sell them.)
Back then even a generic Money Market Account yielded a better return, and the Whole LIfe & Universal Life policies seemed be a lower return than even a CD (Certificate of Deposit) at any local bank around town.
If you truly have NO NEED to financially offset the loss of income or talent due to your death for a family member or business partner then I would steer clear of the insurance for an investment.
Insurance agents get a recurring commission on the premiums paid on a Whole life or Universal life policy for as long as the policy remains in force and premiums are being paid.