What did Nick do on his last night living on West Egg?

On his last night living in West Egg, Nick Carraway reflects on the events that transpired, particularly the tragic death of Jay Gatsby. He spends the evening packing his belongings and contemplating the emptiness of the lavish lifestyle he witnessed. Feeling disillusioned, he ultimately decides to return to the Midwest, seeking a simpler, more authentic life away from the decadence of East Egg and the hollow pursuits of its residents.