Millions of Americans look forward to their 62nd birthdays, because that's the date when most workers become eligible to start receiving Social Security benefits. More people claim Social Security at age 62 than at any other age, and the reason's pretty obvious: Having paid into the system throughout their careers, they don't want to wait before starting to get their rewards.Yet just because you're turning 62 doesn't mean that you should automatically start getting your benefits right away.