Maybe, the discussion is completed, but anyhow, I just wanted to jump in that I am one of returnees!
I played piano till 16. I didn't have a real teacher but I had a neighborhood music prof sort of teaching me and giving me all sorts of scores. Then, I didn't play for 25 years. Then, 4 years ago I quit my corporate job and started doing an independent project, so I got time, and that made me to sit in front of my husband Clavinova (my husband is tenor). 2 years ago, I finally had a courage to seek out a teacher, so I randomly reached out some teachers I find online and some bluntly declined they are not in the business to teach those uncommitted adult hobbyist!! I had a luck to get a teacher from conservatory takes me, and that was quite a shocking experience. I realized I never learned how to play piano. His lesson was half fitness class and half greek (music, I guess?). But then, as I do travel a lot for my projects, I disappear weeks sometimes, and he got really tired of teaching such an "uncommitted" adult student. I kinda got fired that he wants to teach me only if I commit to a regular weekly lesson schedule.

Now my friend helped me find the another teacher who is more focused on enjoying music (more like my childhood prof), so it is okay so far...
I'd say you should not worry about how well you play or what teachers would think. We are not any more a fit for those pianist production machines. Nor we don't need to join a recital to please all those adults paying our piano lesson fees. We play piano just for ourselves and pay for lessons ourselves.
I wish more and more adults play piano just simply to enjoy, like we may cook to enjoy, or go jogging to enjoy. Every mom is the best cook, and every household can have the best pianist.