Why do we feel nostalgic?

Don’t you wish you could just live in the past? Curl up in it like a warm blanket, covering all the cold unknowns and unexposed realities of tomorrow. Bury yourself in its warmth, the glowing days of pure joy and limited worries. The comfort of childhood and zero responsibility. Snuggling down into the abyss of better days and easy living? Those moments of childhood at the park. Those days of Pre-K with worries only of ice cream at snack time and after-school television.