You conclude with another opinion, stated as a fact.
I am not sure, I merely discuss ideas. I happen to believe in reincarnation, but that is based on evidence, not religious indoctrination, primarily the work of Dr. Ian Stevenson on children's memories of past lives. This is modern research, conducted with a careful eye, not rushing to conclusions. You could look him up on the internet, or look at my series of articles about him.
As for animals, that's another question. I don't know for certain. By coincidence, my next planned article is about whether cats reincarnate. You could look out for that one.
My answers to your other questions might cause you respond with similar objections, so let's leave it at that for now. I'll just say that in my opinion there is a lot more to organisms than mechanics.