This was awhile back, but at the end of 2012, we had a lady retire, who was under the old CSRS plan, and had one year under the max in. I always used to think you had to have 40 years, but I think it's actually 42, to get the full 80% of your best three years?
Anyway, at this point she was about to turn 78, and her career had been on cruise control for years. I remember her saying that she decided to go out at 78%, rather than 80%, because something had changed...maybe they were going to make her pay more for health insurance or something like that? But, she just decided it wasn't worth it, to stay an extra year for another 2%.
I don't know what her financial situation was, otherwise, but I know she was a widow, and might have gotten something from that. She also had a fairly nice, upscale home in Crofton, Maryland, that backed up to a golf course, and I'm sure was long since paid off. So, she was doing pretty well.
Well, presuming she's still alive, that is. She'd be 86 now. I looked up her house online, and it shows it's still in her name, just in a family trust. I tried googling her name with obituaries and nothing came up. So, hopefully she's enjoying those twilight years!