The main reason to buy a life insurance policy outside of the employer provided plan you are given through your job is so you own your own life insurance policy.

This means, if you lose your job for any reason, you still have your own life insurance coverage that stays with you.

So, you won't lose your life insurance when you either retire, quit or are fired from your job. But, you can lose your life insurance benefits if you leave your job.

Owning your own life insurance policy...