Because as long as it exists, they can dream about future Israel will include Judea and Samaria. An end of the occupation will shatter such dreams. The occupation is needed to uphold the Zionists' dreamworld. And the Israeli political establishment is tied to the Zionist dreamworld. Would any state, without such considerations, choose to remain for forty years in trouble with a hostile population instead of getting out??? You bet.
U.S. asks Uzbekistan to join anti-ISIS coalition (Reuters)
from the article: The only chance to defeat Hamas