You mention your life has changed in the last few years, which is why the decision is more difficult. How has it changed?
Briefly:
1) Wife - There are just the two of us at home and she doesn't feel that secure being left alone for that long esp when I have to rely on air travel to return. Lack of companionship is another issue as we are best friends and mostly hang out with each other. She had immediately family living close by last time I was away and a big-a$$ dog for security, but the dog is gone now and family has moved away.
2) Work situation - I hated what I was doing before the last opportunity came up and even though I was only given until the end of day to make a decision at that time I said yes before the end of the call.
3) Medical stuff - not even gonna go there...
Anyway, I've read and appreciated the comments folks and after talking about it with the missus last night I think I've made up my mind, but a couple of phone calls Monday morning should cement my position.