And what about saying that you are taking a sabbatical? And explain that you are responsibly living off your savings/investments. That the sabbatical takes longer than usual, is maybe not something you have to explain immediately. But at least, you won't be lying overall.
I agree, this definitely addresses the concern about either having to lie or talk money right at the beginning. Which is good.
The downside is that being on a sabbatical remains something that is is easy for a person who is not responsible to claim as well. So my guess -- having never yet been in a position to use this description, nor been on a date with someone who described themselves this way -- is that there would still be a fair bit of concern that "taking a sabbatical" was code for laid off/fired and can't-find-work/too-lazy-to-look-for-work.
This skepticism is going to be highest in environments where two people have no preexisting connection and the social cost of lying is low. (Online dating, bars, etc). For things like meeting friends-of-friends or at churches (if a person attends, I unfortunately do not), the social cost of a person lying or misrepresenting their situation is higher, so summarizing FIRE as taking a sabbatical to start with might work better in those situations.
Wow...that's giving a lot of thought to something that might be a total non issue.
Having read your journal, I would be shocked if you didn't have some level of interesting project on the go to be able to speak to when meeting someone new.
"What do I do? Well, I've spent the bulk of my career as a fancy pants professor doing super cool research projects A, B, and C, and now my focus is mostly on project D, which I just started on last year and I'm really excited about"
Truthfully, project D might just be in the "sitting on the sofa reading articles about subject matter D and musing absent mindedly about how you would work on it if you were involved" or it could be something you are actually paid to work on, who knows, who cares?
There's also no point in trying to preemptively control how others perceive you. Besides, most people on dates are far more preoccupied with their own insecurities and their own efforts to try and control how they're perceived, that it almost doesn't matter what you say.
Also, trying to actively avoid any subject will just come off as cagey. If finance comes up naturally, then go ahead and talk about it to the degree with which you are comfortable.
Put your energy towards putting others at ease so that you can get to know *them*, not micro managing what you intend to say or not say so that you can try and control how they see you, which doesn't even work anyway.
I've been on, like, a lot of dates and I barely remember anything about the life details of most of the men, but I very clearly and distinctly remember if I felt at ease with them or if the encounter was strained and uncomfortable.
The ones I felt at ease with were the ones who were comfortable in their own skin and happy with their lives. When you date a lot, you quickly realise how common it is for people to be miserable, so relaxed happy people are SO refreshing.
Don't treat a date like an audition for a part you want, treat it like what it is, two people getting to know each other just a little bit more and ideally have some fun while doing it.