I don't think that most people are happy as they age. They are not sure where they are headed ~ perhaps they are uneasy about death. One common desire is to enjoy life as much as possible while there's still time. This seems like a form of escape. For believers of Christ, growing old should be cause for joy. For sure, you'll be leaving behind all the miseries of the world, but this shouldn't be any consolation because the miseries still remain after your departure. The prime joy of growing old is knowing that you'll soon be seeing the loving Lord face to face, who is good at wiping away every tear from your eyes.