Because security wise there is absolutely no difference as there is now, Lets pretend for a fucking second that it is just Gaza, that the WB with all the land stealing, Jerusalem, Dome of the Rock, settlers, partitioned into 5 quasi states (the Edhud Barak deal), 3% land loss. Etc lets pretend the real prize for Israel and the only thing it wants to keep no longer exists.
Then we have just Gaza, Israel does not want Gaza, they tried to pawn if of to Egypt, and Egypt said fuck no, you won it fair and square in that sneak attack in 67. Leaving Israel either giving them independence, or continuing apartheid (they control the borders, sea and air, and kill with impunity extrajudicially hence apartheid).
I honestly see no difference as a security threat, I mean they still use their brains to smuggle all the weapons they need. Are they ever going to get an airforce or something?
Hezbollah is in an independent Lebanon that Israel has no problem violating their sovereignty, if anything they have more to lose and are therefore less crazy than Hamas.
Honestly if the WB did not exist Israel would just make any peace deal in Gaza, like literally keep everything, a two state solution would happen yesterday.