I can pass for normal, I really can, but I wonder if I am, in fact, a garden-variety geezer. Or maybe something else? Like a nostalgia-addled, memory-ridden, photo-burdened acquisitor of memorabilia? You tell me.Is it normal to be not just a pack rat, but a pack mule, riding around in life with hundred-pound sacks of old snapshots and mementos? Compare my experience with yours:Did you save your dance cards from the 1950's? Did you save the wedding guest list your mom wrote and the dorm assignment mailed to you in 1954? Did you save birthday cards from the 70's, to-do …