I am a future solo female nomad who would escape S&B **now** except that my husband has no interest in that lifestyle and my kiddo has special needs and needs to be in school where they have more resources/knowledge to help her than I do.
But, kiddo will be off to college in 3 years, God-willing, and though I hate to think about it, I will almost certainly out live my husband. He is ten years my senior, has already had (at least) one stroke, is diabetic but still drinks two cases of coke a week and will take no meds. He also smokes a carton of cigarettes a week. I can hear wheezing on his left side when I put my head on his chest, and he has bad pain in both shoulders and severe reflux, which taken altogether, sounds like he might have lung cancer. He absolutely will not go to a doctor though. So I'll do what I can to make him feel as comfortable and loved as I can in his decline, until the day he leaves this earth, and then I'll live on.
So my retirement plan in 8 years is to shed stuff, convert a van, get a dog for company and security, and pull anchor. I make good money now, so SS + 401K should be plenty to thrive on in the nomad lifestyle. Might make a few extra bucks writing. I'm a social critter, but I've never minded my own company either.