Agents will try to sell you "whole life" cover cos the commission is based on the value and length of term.
I dont believe anyone needs whole life cover. We usually require specific amounts of life cover during certain times of our lives. single, dont have much debt dont need much cover. married, young kids,house, car loans etc..need more cover. grown kids, house paid for etc, reduced cover.
So rather take x amount for 5 years or 10 years(called term cover) at a flat monthly premium and add to it if you need or reduce when the term expires.
Also life cover is not like home/contents insurance. You can have duplicate policies.