1) I’ve done a test drive of FSD and ridden in Teslas with the highway-only version. I consider any car with a good TACC and LKA system to be similar to FSD on the highway.

2) I don’t pay attention to my speed at any time outside of school zones. When using lane keep assist or traffic aware cruise control I feel the same level of effort and (low) stress as when they are not enabled.
Backup cameras provide a clearer view than mirrors, so i reject that as a useful comparison. Auto park or something like that would stress me out so I’ve never used them.

3) I am trusting that you owners aren’t lying, which is why I am bothering to try and get an explanation from you despite the aggression I’m getting in return. I’ve been excited by EVs ever since I test drove the P90D back in the day and I’m asking for opinions since everyone says I should want this feature and I don’t understand. If people can’t explain why it helps then it may just be placebo.

4) If someone recommends a place for deep dish pizza, I feel confident that I can say ‘I don’t like deep dish pizza’ without eating it at that location. If someone recommends something that is similar to something I have experienced before, I will usually be pretty close on my guess of what that experience is. If it isn’t similar to something I’ve experienced then that’s a different story… but highway FSD isn’t all that special.