Ticket stubs. Letters. Cards. Calendars. Programs. Coupons. Clippings. Receipts. Postcards. Documents. Photographs. Scraps of paper inscribed with handwritten notes or lists—some hopelessly illegible. Everything else relegated to be out of sight, out of mind until the mythical far-off day “when I have time.” Why have I felt compelled to save so much stuff over the…