Mostly due, I believe, to getting sick shortly after retiring, but old age and overweight are part of it.
Actually, my balance is much better and still improving, but it's been 14 years now since I lost my balancing abilities. I fear I'd fail a field sobriety test if I'm ever stopped as I tend to 'list' to the side when walking with no pressure to perform. Of course, I would pass the breath test, but I don't know if the officer would believe me or suspect some other illicit reason for my wobble.