I’ve lived in Maine my whole life (except for college in Boston). It’s cold. Yesterday, we had a big snowstorm that dropped a foot of snow. I also have hip issues. I’m not sure what joints you’re referring to but if you’re talking knees or hips, winter can be tough not just because of the cold but because you will find yourself climbing through snow and slipping on ice. All of this said, there’s a reason that I stay here. Maine is beautiful and safe. You just need to have appropriate gear for the cold weather and take it slow when there’s snow and ice on the ground.
If you lived in Florida, you’d spend summers going from air conditioned space to air conditioned space. In Maine, we spend winters going from heated space to heated space.