The appreciation of FSD is a wide spectrum. Some folks think it's the best thing since sliced bread and are happy they paid $15k for it, some like it for a small subset of their driving, and some wouldn't use it even if it were free (I'm in that camp). It definitely has the ability to kill you and your passengers if you'll let it.
I consider myself in the middle. I bought enhanced autopilot with my car in 2018 with the expectation that I would summon it in and out of my garage, and also because I wanted it to be able to automatically change lanes on the highway (although at the time it required the driver to ensure the new lane was clear). That was the sum total of my expectations at the time.
The latter worked, and pretty quickly they enabled the repeater cameras so that the car itself would monitor the new lane.
The summon (and by that I am talking about the simple straight back in/out summon) has never worked, which is hugely disappointing to me. For some reason it wants to REALLY avoid the side of the garage and starts heading for the other car in the garage, and then chickens out. I had really hoped at least this would work, but it never has.
When FSD was put on a fire sale for $2K I did buy it--with tempered expectations--but at the time I was hoping to "invest" in Tesla's FSD program, hoping that eventually it would come to fruition, maybe by the time I didn't feel comfortable driving my self (in 25-30 years). I use it all the time on highways and mostly enjoy it (although to be honest, it's kind of gotten worse, wanting to make lane changes that are unnecessary), but this is really nothing more than Enhanced Autopilot. I occasionally use FSD on surface streets to see how it's doing, and while there have been incremental improvements, I still think it almost requires more attention than if I wasn't using it at all.
My wife bought a used Model Y from a Kia dealer who had no clue about Teslas and it happened to have FSD on it. So she has it as well.
It will be nice if it eventually develops into something more capable than what it is today, but really the only functionality that we use regularly these days is the equivalent of Enhanced Autopilot (although at least with Enhanced Autopilot it's not going to be always wanting to change lanes, which is very annoying).