Michigan comes with a caveat. The state ranks pretty high in part because of its low cost of living (12% lower than the national average) and generally low taxes. However, most expect the state to make some changes in regard to its taxes pretty soon in the future. That said, it still has nearly everything you could want. There are iconic cities, as well as vast stretches of wilderness.
It also sits on the Great Lakes, meaning there are plenty of opportunities to hit the water. Around 10.3 million people call Michigan home, of whom 1.9 million are 65 or older. Sales tax is 6%.