Because the Palestinians are suffering a severe deficit of woes and a surplus of money that is just begging to be spent in a controversial manner:

If the Israelis have the nuclear weapons and the nuclear capabilities, then it is the right of the Egyptians, the Syrians, the Saudis to have the same – even the Palestinians should have the same because their counterparts, or their opponents, have nuclear capabilities. And, if we don’t want this situation, so we’ll have to disarm the Israelis from their nuclear weapons and capabilities. [Source]

If only it were that simple.