There are some advantages to getting older, especially if you are behind in your retirement savings. In the year you turn age 50 (and every year thereafter until retirement), individuals are allowed to make “catch-up” contributions to help boost retirement savings. In qualified retirement plans like 401(k)s, the catch-up amount is $6,000; for IRA accounts, the amount is $1,000. But how much does that boost in savings help?...