Some thoughts:

1. One of my kids will clearly decide if they like a new food or not long before it touches their tongue. It seems unlikely that she will have completely outgrown doing that by the time she is 18

2. Throwing yourself into something more fully can qualitatively change the experience. Wallflowers may not enjoy social events; people awkwardly half-participating in things due to embarrassment can be less happy than both those who participate whole-heartedly and those who abstain.

3. I'll treat this as my reminder to retry reading Moby Dick (which I do about once-per-decade in case I start enjoy it like so many of those in my social circles)

Lots of people want their kids to get better grades. Lots of people pay for tutors or extra after-school education. You could directly pay your kids to get good grades. This seems strange and possibly bad, though I’m not sure why.

1. I had friends in the early 90s who were paid $20 per A on their report card. This was very foreign to me; getting good grades was considered a baseline expectation in my house (I did not study, do my homework, nor get good grades. I'm about 99% certain that $20 per-class per-quarter would not have motivated me to do any of those things).
2. There is some evidence (but I'm never sure of the quality of evidence in behavioral sciences) that adding an extrinsic motivation to something decreases intrinsic motivation. Thus the fear that paying kids for good grades would decrease their desire to perform well out of some internal sense of pride.

One thing to be aware of is that if you just ask "Is X right" you won't get the negation of "Is X wrong."

Also, several of the questions involve time-pressure. For me, any time-pressure will bias me towards inaction; it's a heuristic that if someone is pressuring me to make a decision quickly, they are probably trying to cause a decision I wouldn't make when calmer. It's illogical when applied to agentless sources of time-pressure, but still applies.

Sorry for the late reply, but $20 per A (times 7 subjects) was $140 which was more than my annual allowance at the time ($2/wk), and grades came out 4 times per year, so this was a significant amount of money for me, particularly before I was 14 and could legally get a job.