It's crazy, I still remember when the Hubble Telescope had to be repaired and the initial disappointments after launch when the errors were discovered. And now there's already talk of scrapping it. The currently missing service missions of the Space Shuttles are the reason. I think NASA should only retire Hubble once another telescope is up there and, most importantly, working. It wouldn't be the first time something went wrong at NASA ...
At National Geographic News: Science & Technology I found the original article.