I’m less sharp, Sherry. Not every day, not most days, but some days, and more when I’m tired. Multitasking is harder. Keeping code in my head is harder. Keeping all the threads of algorithmic possibilities in front of me is harder. Not getting irritated by stupid people is harder (and THAT is the part that will get me in trouble, in the end). Retirement in a couple years will be a Good Thing.