You must learn to count your blessings. We had a friend and neighbor who was out riding his bike who dropped dead of a heart attack at the ripe old age of 48. He was a avid bicyclist and in great shape but heart problems ran in his family and he waited to long to do anything about it.
I love being 53, I love the looks I get when I'm on my bike and love to stomp the young kids when I can. I'm in better shape now then when I was 25 and looking forward to retirement and senior discounts where I can save some extra money. I go to the gym and can out do just about every woman in there and my husband is darn proud of me, so that makes me feel great. Older age -- bring it on, I will stomp that too!