From Motley Fool:

America’s population is getting older.

By the year 2030, the baby boomer cohort — those born between 1944 and 1964 — will all be older than the retirement age of 65. By the year 2034, it’s projected that there will be more people 65 years of age and older than those under the age of 18. What’s more, this shift in demographics is expected to continue well into the future. 

Read more