I think my contract with the devil to make me the world's greatest Centipede for Atari 7800 player must have expired. All my high scores now are about 100,000 points lower than they were this time last year. =P
Truth be told I'm pretty sure it's just that ever since I had to get my thyroid gland removed last May my reaction times haven't been quite what they used to be, so I just can't play games as well as I used to. It's frustrating but that's life I suppose.