"how can somebody justify demolishing the houses of the people because they are arabs and give to the other people who are jews? "
How could Arabs justify expelling Jews to give their lands and wealth to others?
"i am sure you would agree with me that those illegal settlers are not any peace loving people, they are viiolent and the most fanatic people, they go scott free, but palestinians get the punishment."
No, I don't agree with you. Just like the "dire situation in Gaza", it is the difference between what things ARE and what they are CALLED.
"i cant understand how to compare the rockets of hamas with the military might of israel."
Israel demonstrably uses its weapons for self-defense; both the charter of Hamas and its actions point to the goals of Islamic militarist domination of Palestine and the elimination of Israel. Weapons are tools towards fulfilling such goals. Hamas has the arms to dominate its captive populace, but not destroy Israel; Israel has the arms to defend itself.
"PLO has been negotiating with the successive israeli governments, what have they got in return?"
They got Oslo, international recognition, the return of the PLO leadership from Tunis to Gaza, a bounty of Israeli and foreign economic and military aid, the release of thousands of prisoners, their own territory of self-determination...by any measure, the PLO got a great deal, and STILL its leadership calls for the destruction of Israel.
"more settlements which is already declared illegal by the UN?"
When the U.N. can declare which Israeli "settlements" are LEGAL and which ARAB settlements are illegal then I will pay greater regard to its announcements in this matter. How about you?