Because, truly, no amounts of rockets falling in Israel can cause the damage these organizations cause on their own people on a daily basis. From brainwashing them at an early age at their schools, sending 10-15 year old boys to die as martyrs or soldiers, to holding the Gaza strip on a curfew with justice being a bullet on the street.
They aren't even trying to become a country anymore. The Palestinians on the West Bank are the ones attempting that. The Gaza strip is a whole different story.
I honestly can't stop repeating myself over this point: If you feel you're a true supporter of the Palestinian cause, go visit the Gaza strip, and then tell us if you actually still support Hamas, after watching the atrocities they cause against their own.