After Mrs. C retires and her mom is gone, we have seriously considered moving to the southwest. Either New Mexico or Arizona. We have been in those areas before and the drier air is easier on out arthritic joints. This year we did get a 32' travel trailer to go out west and check out some other areas.
Edit: Michigan it a terrible place to retire... way too many taxes on your income where as other places do not tax at all.
Already know about TX... got family down there already.... not going there except for visits. Next year we are going to plan on heading out to the Yellow Stone and Bryce Canyon areas. They look like nice places to see. Housing is $$ High$$ no matter where you go it seems like today