I also went FSD. At first I was going to skip it on a vehicle like this. Then I caved. I figure that it shouldn't increase the price if I decide to drop it and being able to summon will actually be handy.
Let's say you go out to some remote place, park and then hike. If you take a fall and are injured the ability to have the truck come to your location and drive you to a hospital is pretty neat. You'd still have to be able to function enough to get in, but there's a big difference between just levering yourself up into the truck and having to do that and everything else.
Sure, current FSD capabilities aren't that good, but two years from now?