I turned 75 this year, and I ask myself what it's like as opposed to, say, turning 25 or 35 or even 55. Here's what I've come up with. Imagine yourself lying down outside. It's a beautiful day. You can feel the warm sun on your face. You hear the birds chatter. Friends and loved ones come by and you have great conversations. You don't worry about having to go to work. Your schedule is your own. You are content until you realize that you are tied to the railroad tracks and you don't know when the train is coming.