We launched Google Reader in 2005 in an effort to make it easy for people to discover and keep tabs on their favorite websites. While the product has a loyal following, over the years usage has declined. So, on July 1, 2013, we will retire Google Reader. Users and developers interested in RSS alternatives can export their data, including their subscriptions, with Google Takeout over the course of the next four months.
Google's transition from free Web services to hardware products shows just how hard the advertising market has been hit these past few years. If you use ad blockers, you have no right to cry about losing Reader.
But as Marco Arment points out, this will likely lead to a new golden age of RSS. Good ideas don't die on the Internet: they either last forever or evolve into something better. If file sharing is still around, why worry about RSS?