And geography
MI doesn't have enough sunny days in the year to keep me from reaching for the shotgun. Summers are OK, its the long gray winters.
The other issue is access. I live on a sailboat these days and am somewhat constrained to coastal working locations (I could move inland - but I'd really rather not). Moving is easy - as long as there's a marina nearby that allows liveaboards. Landlocked locales are not for me (Denver being an exception as I already have family and a house there).