Stop dehumanizing the hostages. Every single one of them is a living, breathing person, not a bargaining ship. Watch interviews with the returned hostages, what their more than 50 days in captivity was like. Realize what you are condemning the remaining hostages too, when you judge their plight, their suffering, their death as less important than that of the palestinians. Hostage taking is a war crime for a reason. There can be no excuse and no justification.
Negotiations succeed when both parties get what they want. Recognizing clearly what those wants are, refusing to lie to ourselves about those wants, and working with focus to fulfill those wants is vital to successful negotiation. Currently in the US we are seeing LOTS of stories about deals Biden is putting forward to "end" the genocide in Gaza, but all of these deals are predicated on denying Hamas what it wants, offering only temporary unsecured ceasefires for all of the hostages, which is something Hamas will never agree to. This prolongs both the world-historic suffering of the people of Gaza AND the suffering of the unjustly taken hostages. I'm distressed by this and I want that to end, and I wrote the above to express that distress.
Of course: the Netanyahu government has made it more than clear that the hostages' return likely would not end the violence. They're certainly being used to justify it, but this violence has gone a hundred-times-past any possible reprisal. And of course it has killed some of the very hostages it reputes to be recovering. AND Israeli officials like Smotrich are openly using the assault to advocate for property development in Palestinian territory. So: If anyone is condemning the hostages to remaining hostages it's not those saying "give Hamas what they're asking for to release them", it's the Netanyahu government which, through these actions, has consistently shown it cares more about this assault and the objectives it hopes to achieve through it than their lives, and of course Hamas for taking them in the first place.
You're right that all human suffering is bad and should be stopped. That's what I want too. Giving Hamas a guaranteed end to the assault on Gaza will produce a guaranteed end to the holding and suffering of the hostages, which is why I think THAT should be the deal people work on. Working on other deals isn't really working for a resolution; it's wasting time at best and, at worst, actively working to keep the genocide going while PRETENDING to try and end it, trading the hostages suffering for more time to kill innocent people in Gaza, which is a monstrous thing to want.
Hamas's actions are not just, but neither are they irrational. The current Israeli government has consistently refused to deal with any Palestinian institutions on any issue other than hostage exchanges; has consistently done whatever it wants without any consideration for Palestinian needs or desires; has consistently chosen to pursue its objectives vis a vis Palestinians through violence rather than any other method; has consistently ignored every Palestinian response to its actions BUT violence. It doesn't do anyone any good, certainly not the hostages, to pretend this situation is anything other than the complete shitshow that it is, or that piecemeal offers can ever be acceptable to any Palestinian organization when Palestinians are facing such an existentially dire situation.
And finally, because it really can never be said enough, Genocide is never an appropriate response to anything. There IS no response even possible in killing someone -- let alone tens of thousands of someones -- who didn't harm you for a harm you have suffered. Bombing civilian apartment blocks and shooting up hospitals cannot possibly "punish" the soldiers of October 7th who killed those poor people, and took these hostages. It is quite literally murder for murder's sake. That, horrifically, is what the Israeli government has chosen to want, what it continues to choose and continues to value over the lives of the hostages, and the basic human decency which moved me to write this, and you to respond to it. It could end the violence anytime it wants but it doesn't because it Wants the Violence, and the only people who COULD convince it to stop, my own government, Won't, and all of this is a terrible and horrifying thing to contemplate.