I swapped my 50 for a 47... and I love it.

[rkelsen]

Overweight, asthmatic and 47 years old.

Found a 47 tooth chain ring in the shed, which was the right BCD for my cranks.

Tried it just for a laugh, but I'm getting PBs on Strava every time I go out... Loving it! I think it's gonna stay on there.

[Mububban]

I've got a 50-34 but would love to try a GRX 48-31. I never need to go faster, but often have my skinny legs crying out for more easy gears when climbing!

[timbo]

I'm coming into this very late, but if it makes cycling more enjoyable, and makes you want to get out there and ride, then just go for it.
I don't care too much for Strava, except to add rides to the list, however any time you beat a PB, well, that's kind of cool.