The Best Reason to Take Social Security Long Before Age 70
Social Security isn't something everyone is entitled to automatically. To qualify for benefits during retirement, you need to work and pay taxes on your income (or be married to someone who qualifies for benefits).
It's for this reason that so many seniors are invested in getting the most out of Social Security, and understandably so. And you'll often hear that the best way to maximize your benefits is to delay your filing until age 70.
You're entitled to your full monthly Social Security benefit based on your personal earnings history once you reach full retirement age, or FRA, which hinges on your year of birth. It's either 66, 67, or 66 and a specific number of months.
Source Fool.com