I've been tempted in the past, but a few iOS versions ago the beta made changes to the way icloud behaved and it was a one-way trip so it would affect things on non-beta devices and one couldn't revert. I forget exactly what this was only that I think maybe related to photos.
It's hard to resist as new features seem great, but the apple AI stuff isn't rolled out yet and it's been a really, really long time since an iOS update really changed life all that much. App store was maybe the biggest update, back in the day but even that took a few months to really change the iphone experience.
And in the meantime, my iphone is a bit mission critical - communication, looking up stuff, authenticatoring, car-key, etc.