My experience was similar. I tried it once in the 3, my wife used it quite a bit more than me. I had no intention of trying it in the Y until my wife was talking about it again on the way back from picking it up. I did not want to try it that day, but after I stopped to eat it finished installing the FSD update and enabled itself, so when I went to set the cruise FSD came on instead. I was not pleased, but decided to let it do its thing. It cut off a semi 20 minutes later and then started speeding to open the gap up. I was absolutely done at that point.I tried the "free for a month" FSD system - twice for about 10 minutes each time. I didn't like it and turned it off. I won't be adding it to my Model 3 (and wouldn't use it if it was part of the basic package).
I've been told by so many to change this or that setting that I would have known nothing about, but what does that say for the average driver of a Tesla? Say it did improve my experience, how is the average driver who doesn't spend time on forums and Reddit ever going to know that unless they actually go through and start messing with speed settings, lane change settings, and the aggression level so to speak? The most advanced system on the car is the least intuitive one. How many people had FSD enable like I did and don't know how to shut it off to get standard cruise control back? Would it kill them to put the single stalk pull for cruise, two pulls for FSD back? I swear they removed that to force more people into FSD since the car doesn't collect driving data for FSD unless you're actually using it. That part feels really wrong to me.
My wife likes it enough that she'd want it if it didn't cost $99 a month. I would think if she did more driving maybe it would make more sense. She understands a lot of its shortcomings and knows how to work around them. I don't have the patience for it and I don't like not feeling in control of my own vehicle. It's the highest form of anxiety I've ever felt behind the wheel of my own vehicle.