Allow me to preface this by saying that I think both sides act like enormous cunts at times and I am also eternally grateful that it is not my life.
The only problem I have with the “Its Palestinian land” argument is that 1948 was 75 years ago. Its very important to the macro view of the sutuation but do you think a 3rd generation Israeli born citizen who is now strapping up his body armor to fight so that people stop trying to kill his family gives much of a fuck about how young his country is? Or who traditionally owned the land? Its his town, his city, his little brother who was just kidnapped.
I dont think anyone seriously thinks if Israel gave Hamas/Palestine the whole west bank, no more arguments about borders, leaving the settlements alone and trying to make peace that Hamas would become all about peace, hugs and understanding.
I think its absolutely impossible to defend either side with a straight face. Ask both of them about the worst 10 things the other side did and both of them are monsters.