My mom is 91 and still going strong. She's had both knees replaced and cataract surgery on both eyes. She was pissed when she had to start wearing reading glasses at 86 or 87. She still maintains her own house, does all the cooking and most of the cleaning, plus she is president of the local artist club and is involved in a writer's group. She has been painting for about 20 years now and has sold several pieces of her art.