I had over a year of completing the health three rings on Apple Watch (maybe failed on two or three day) - but a flight tripped me up and it fell apart very quickly.
The ability to make up the missed days might have led me to carry on. Or maybe forgiveness if you'd gone over in the precious few days.
I am with you. I am well aware of being gameified yet it worked for a while for me as well. But after having been sick for a few days I lost my streak. Apple tolerates no sick days (don't take this out of context).
Also, not getting in enough stand hours because I have to put the watch on the charger during the day (the non-replaceable battery of the watch is on its way out) was another reason to stop chasing rings.
I still use the watch to track my activity and my sleep but I gave up chasing badges.
I've a ~six year streak with travel logistics and 3 Covid Shots being the only exemption. As long as it's planned, there's no need to get stressed about it.
The ability to make up the missed days might have led me to carry on. Or maybe forgiveness if you'd gone over in the precious few days.
It's sad really it was quite an accomplishment.