As Alzheimers is in my family, I have seen first hand what memory loss does to the family members. So I would hate to lose my memory. It would be most heartbreaking for my loved ones if I didn't remember who they were.
Aches and pains are my biggest worry, by far. I'm already dealing with chronic pain, it'll probably get worse as I age. I dislike taking painkillers, but lately I've been taking acetaminophen more than I'd like.