I've got my Fold 3 and it's amazing. Are there compromises? Absolutely. Are they worth it, also yes.
I've always been the type to upgrade my phone every year, but I'm thoroughly satisfied with this device after 2 years, and don't see myself replacing it anytime soon.
The biggest thing foldables need now isn't new features and spec bumps. What they need is a significant price cut.
Full-size foldable phones still costing $1800 5 years in is why they're such a tiny market share.
That's what I thought originally, but the fold is not noticeable at all when you look square at it, as far as how it feels to move your finger over it, it feels like a small tactile bump. Feels nice actually. I use a membrane screen protector and foldable case with no issues, over the last year there has been no degradation of the "crease" or the folding mechanism.