Wtf are you on? There were already settlements in Gaza that dated back before the Israel independence, and Israel continued to support them up until 2005 when they unilaterally existed. The hope was that exist would foster peace between Gaza and Israel, but the first thing Gazans did was elect Hamas and the rest is history. It doesn’t make sense for Israel to go back into Gaza. They already gave it up, which means there’s no strategic value there. They have nothing to gain from such a move.