Israel withdrew fully from Lebanon in 2000, and this was certified by the UN, yet Hezbollah kept attacking them anyway.

If Hezbollah offered Israel a choice between: peace with Hezbollah OR occupy land in Lebanon, I think Israel would rationally choose peace.

But Hezbollah has never offered this. Their stated goal is complete destruction of Israel.

So if the options are: Hezbollah shoots at you from right across the border OR you occupy a buffer zone and Hezbollah still shoots at you but from further away:

Isn't it perfectly rational to choose the buffer zone?

Israel just communited genocide in one place and displaced millions in two others.

It "ordered" wast places full of people to lead, destroyed bridges, created shoot at will area on other side and is getting ready to move settlers there.

Isreal is not defending itself. It is cleansing and expanding, feeling entitled to kill at will everyone not them.