Just turned 42, and as it turns out, I am probably retired. I left my career in 2010 to move overseas for Husband's job. At the time, we thought it would be 2.5 years. We are still overseas and will be until at least early 2019. Finding a professional level job with a nearly 10 year resume gap will be damn hard. (I've volunteered a ton and taught private English lessons, but nothing that I'd consider a career-level job.)
I hate being a housewife and am not especially suited to it, but the idea of going back to work making barely more than minimum wage, when we don't really need the money, would be a bitter pill. I suspect I'll work at some job I enjoy, hopefully at a library, and likely part time.
DH will likely work until at least 2024, for career and personal fulfillment reasons more than anything, though it will make his pension enough for a comfortable retirement, in and of itself, though not for the retirement we want (mainly due to travel aspirations). I suspect he'll have a second career after that because he's a work driven guy, but hopefully that will be completely because he wants to and salary won't even be a consideration, and hopefully he can get enough time off to make that travel happen.