Everything you need to know about Qassams in three quotes...

"The Moral Dimension is demonstrated by the photograph on the front page of the Washington Post... there are two women there... One is a Arab Woman who is grieving and the next women there was a Hamas Rocket which hit the town in which she lives and she is being consoled about it by a policemen. We can't be indifferent about it... The Hamas people have provoked Israel and there is no doubt about it and they have harassed Israel... But does the repose have to be on that scale?"

Zbigniew Brzezinski http://www.huffingtonpost.com/2008/12/30/zbigniew-brzezinski-calls_n_154211.html

"In 2006, the Israeli Ministry of Defense viewed the Qassams as "more a psychological than physical threat.""
Wiki

Hamas is bascially a humanitarian organization that provides education, healthcare, food & shelter to people in need. Only a very small fraction of Hamas is hostile. But of course, that's what gets all of the airplay.