I actually had a z fold 3. I absolutely loved it! Battery life was great for my usage and the extra screen space was wonderful. You don’t notice the crease when your actually using it. You only notice it when your actually looking for it.
What stopped me from getting the next one was because on my device I saw what I assumed were hair line cracks that were developing at the crease. At first I thought it was scratches but eventually more showed up. As a former technician I knew my screen was going to fail soon. The unfortunate part was I had the phone financed through my carrier and these started to develop well before my upgrade period. It made it just a little over a year when this started to happen. This prompted me to pay it off the rest of the way and trade it in for a more conventional phone.
Again I loved it. But I think it’s too soon for me to fully commit to foldables. At least I actually tried it.
Maybe this is why they do anal probing on those they abduct! Eye for an eye!