This is very long, and I only read the first 10 or so paragraphs before concluding that this was your notes to yourself on something, and I wasn't sure what, if any, discussion or updates I could participate in.

I'm pretty well sold on moral anti-realism (there's no truth value to whether one "should" do something, only preferences and causality).  From an aesthetic standpoint, I prefer life to unlife - it's more complicated and interesting.  That's enough for me to answer most of the button thought experiments: pressing (or creating) the red button is ugly.

It is not at all obvious to me that suffering outweighs pleasure. Certainly in my own life the reverse is true, and the behavior of most other people implies the same for them. I wouldn't push any of the buttons.