"Instead of killing Jews, invest in the economy" - British MP slams Hamas

If the people of Gaza suffer so much from poverty why do the Hamas leaders who control the Gaza Strip waste all Gaza resources to develop their missile arsenal in order to kill Jews in Israel?
As you can see in the video below, this is exactly what a British MP asked during a parliamentary debate regarding the humanitarian crisis in Gaza.
Western countries donate billions of dollars to the Palestinians but unfortunately the Palestinian leaders of Hamas, Islamic Jihad and the Palestinian Authority are using the aid to promote the murder of Jews.
Hamas and Islamic Jihad have developed a deadly arsenal of missiles with tens of thousands of missiles aimed at civilian targets in Israel. The Palestinian Authority, on the other hand, has a long-standing policy of paying salaries to terrorists for killing Jews. The more they kill the more money they get.
What kind of peace partners are the Palestinian leaders while all they do is promote the murder of Jews?

Philip Hollobone MP: "Wouldn’t the lives of civilians in Gaza be improved and the prospects of the peace process enhanced were Hamas to spend its money, time and effort on the civilian population and not on building up its rocket arsenal?" pic.twitter.com/adtsaLuiE2

— CFoI (@CFoI) May 14, 2019