And it's likely to get even worse. In 2 or 3 years, 3 of the elite QBs (P.Manning, Brees & Brady) will probably be retired along with a very good one in Romo. Also, by then, the likes of Eli Manning, Rivers, Rothlisberger, Cutler & Rodgers will be in their mid to late 30s. There currently aren't many replacements lined up.
The colleges and NFL teams need to start doing a better job of developing young QBs. To think we're in an age of the NFL game where the rules have made it the easiest to throw the football and we still have this problem.