I swear this just happened just yesturday - My wife's parents are living with us right now, because her mother has brian cancer and her father can't care for her. Her dad thinks I'm crazy when I suit up and head out on the bike in the 100 degree heat. He is 78 and spends his whole day sitting in my chair watching TV (something I hope I never do). While on my ride in the State park yesturday, I ran into an old nieghbor riding a hybrid. He told me he was going to do 20 miles and had another 5 miles to go. He also told me that he would be celebrating his 78th birthday on Friday. This guy might die next week, but I would much rather be in his shoes when I reach that age.