What Hamas is fighting for is irrelevant at this point.
Not irrelevant until they are disarmed and another ruling body in place. If they are simply replaced by Fatah, getting rid of Hamas will have been a worthless endeavor.
But right now they are the ones with the guns, so what they are fighting for is very relevant.
Armed and still warring with Israel and nothing good will occur, because you can't rebuild when the war is still going on.
So long as major factions are doing things like tearing up water lines to use the material to make rockets and rocket launchers, you can't fix the water infrastructure because all the materials being shipped in are just used as implements in the war effort (it continues when we are talking about all the things you need for desalinization water plants and the electric grid needed)
We have to be able to have peace in order to rebuild because you have to not only rebuild all this - but better - but also be able to protect it once it's in place
Therefore, factions like Hamas are indeed relevant until they are disarmed, and the worst of them jailed, so long as they are armed they are a danger and they will stop the rebuilding efforts and any ability thereof.
The occupation of the Palestinian territories and unjust treatment of Palestinians provided a fertile environment for the rise of an Islamic terrorist group and its ability to recruit and gain support among a largely Muslim population.
First of all, the Jews having a state is not occupation - so we will end this here.
The Jews have a right to self rule. Israel exists, it's not "occupied Palestine"., it's the nation of Israel next to what people are calling Palestine. Palestine is not "occupied" because Israel exists.
When people recognize the nation state of Israel we can talk. It's a legitimate state. When we recognize the state of Israel, we can move forward with the infrastructure of Palestine.