I'm 44, will be 45 in November. I didn't get married for the first time till I was 40 so I had lots of time to save all sorts of money. I always figured I'd retire at 50 even when I was a teenager. I've also been VERY lucky in my career, so that helps.
I would say retirement would be a little tough at our age. I just turned 41 and always had a goal of retiring by 45. Getting married changed that timeline. I am now looking at lat 50's since we decided to have the kiddo. I say it would be a little tough because I am someone that likes to work...sure there are times I don't like being in my seat, but the money is nice and the benefits are nice. We are now working on our 4th property as a rental. We manage them ourselves and have been lucky to not have anything major happen to them. Having the passive income is what has been really nice. It means that even if I do quit, I don't have to stress. Doesn't hurt that the wife is killing it in the real estate market...soooooo...yeah. Not sure if retirement will go as planned...but it will happen. Probably when the kiddo is out of the house.