I retired three years 'early' and don't know where the time has gone.
I did wonder if I'd get a little bored or handle our long winters, but honestly the time flies by. I'm not one for TV until the evening, although I might pop it on when/if I stop for lunch, but not for sitting all day watching it.
It suits my personality, I can do what I want, when I want and love it. I'm fortunate that I am fit and healthy, still play football and walk a couple of miles most days.
Can't wait until spring comes and the garden is workable, but I love growing my vegetables and just pottering around out there, even mowing the grass.
I think it all depends on the individuals personality.
My better half would struggle when she eventually gets to that point. She likes shopping and interaction with people, so if she couldn't be out and about all the time with money to spend, it would be tough for her.........probably for me as well!! :) :) :)