How Much Life Insurance Does A Person Need? 
The key to answering this question is : to what extent does the beneficiary want to hear a loud clock ticking ? If you use a formula to replace income for a specific amount of years , then eventually the beneficiary will run out of money . What then ? Second marriage ? Second job ? The clock is ticking loudly to do something to replace the lost benefit . Alternatively , if you use a formula that preserves the benefit , then the beneficiary could simply live off the interest . The money will not run out . No loud ticking . 