I also think very similar to this, in lower and higher levels of consciousness. Human minds are constantly evolving, consciousness can’t stay on the same level, always has to expand further.
I have issues with concepts of heirarchy, and while it makes sense in evolution that creatures evolve...I think it's important to acknowledge that even with biological evolution, they are evolving to environmental pressures usually--to fit harmoniously into a universe...or something. Basically, they need to find some kind of balance between their internal needs and the external environment.
So there's no real "lower or higher" evolution--it's all based on what is needed.
If a butterfly evolves to be white because the treese are white in that area, it's not "more" evolved from when it was green, back when it had to blend in with green treese. And if it evolved back into green again, it also wouldn't really be higher or lower evolved.
So it's one issue I have with the idea of reincarnation and the idea that there are higher and lower life forms.
I wonder about Native American mythology, which often featured other animals and plants as equals to the people--or sometimes as gods. So this idea that humans are fitting in to a larger system, that does feature other creatures--but there was no need to call the creatures lower or higher.
That being said, there's a lot about Hinduism and Buddhism I admire. I just am also really interested in stuff like Shintoism and find that agrees with me more for some reason--as little as I know of Shintoism. Or animism.
Like I really like the idea of the Kintsugi--of sealing up a broken piece of pottery with gold, thus making it more materially valuable than it was before it broke. I think we would tend to think of a non-living object as being a lower level of consciousness...and I don't know whether there are shinto roots in this practice of kintsugi, but I like the idea of not bothering about where you are in the heirarchy or justifying things with heirarchy, but spending more time appreciating and valuing others around us.
Even a fly is more evolved than us when it comes to buzzing around and landing on rotten fruit. If I was expected to fly around and drink rotten fruit I would probably totally fail, because I'm simply not evolved for that--I'm way too big and I don't have wings, and I get addicted to alcohol easily. But those fruit flies do it like pros!
So I think that's another slight discomfort I have with some of the dogma around reincarnation--while it does make sense, I prefer to learn from other creatures rather than have to hold myself and humanity above them? Obviously we do look after our own best interests, and I'm not a vegan so I can't pretend I act as if other species are somehow the same species as me. I do survive in this world. But I don't like the idea of having to justify that survival by putting other species down. I just do so because the nature of my body, not because I am really superior to other creatures.