Upload & Sell: Off
The fact that I don't know how I may choose to display my photographs causes me to want to capture as much information as possible. I don't know how much detail I might want to pull out of the shadows. I don't know if or how I might print my photographs.
I'm getting the sense that ignorance is a big part of your life.
Again, just because you can't easily see the difference does not mean it is not there.
It's not just me. You cannot see the difference either. If you can, you can easily prove it to everyone else here. Take that 3x3 image challenge. I expect you to give a 100% correct answer on your first try.
When it is printed on a high end professional printer using a RAW file as the source file, those subtle changes, though not obvious, will cause the printed photograph to look better than it otherwise would.
I have tried this too. Again, for a properly-exposed image (your stipulation, not mine), it makes no difference. Even for modest adjustments, there is no visible difference. When you start getting into extreme adjustments, then yes, you may see smoother transitions or less obvious banding. That is the point of my comparisons: to see at what point the difference becomes visible. And even if the difference can be seen by the human eye, it may not necessarily be objectionable (e.g., look at the dithering examples I posted, which is essentially how all inkjet printers simulate multitudes of colours from only a handful of different inks).
As I said earlier, you are free to do what you want. I don't really care. I'm just putting up examples to guide other people towards making an informed decision about their workflow. How you interpret the facts is entirely up to you. But at least start with the facts.