Difficult times indeed. You both have my sympathy (Brian and HalfShadows) ... like they say, old age isn't for wimps.
I'm hoping to go the way of my mother, strong and fiercely independent to the end. She traveled alone full-time for years until osteoporosis stopped her. Then lived alone another 20 years in a Texas resort town on the Gulf, and finally moved herself into an assisted living home, just a few months before she passed away. She gave me her car 3 weeks before she had her stroke, and downsized considerably so we didn't have much to take care of when she passed away. I thought her timing was perfect - especially that she died 6 months before a hurricane destroyed the town including the assisted living place she moved herself to.
My reasons for wanting to travel have already been expressed in this thread.
1. There's a lot I haven't seen in the USA and I love to explore, and sight-see..
2. Do it now while you still can. I'm not getting any younger!
In fact, my mother's travel stopped when she was the age I am now. That's when her spine started cracking from osteoporosis (which is hereditary, by the way) ... and here I am, same age, trying to get started with my full-time travel. I do feel there's no better time than now. My mom sent my sister and I books about osteoporosis so we could take steps to be better prepared than she was.
I can either travel, or stay in a senior "independent living" apartment where I must submit to management coming in for inspections a minimum of 4 times a year. Plus whatever else comes up, like today, they want entry so the electric company can change all lightbulbs (as if we are not able to.) We're also not allowed to touch our own water heaters. This is a very nice third floor apartment with a view but, I think I'm ready to leave, just as soon as I can get that van.