I use it almost exclusively/when it makes sense to. But so many people are surprised that I use it.
Part of it is because I was an android user until about 2015 and that was always a feature on the phones I had. I also use it because I have small hands and the biggest iPhone so I find it easier to type one-handed sometimes.
I only use swipe to text. I remember seeing it on Android years ago and was excited when it came to iOS natively and use it all the time, I find it a lot quicker than typing normally