Indeed, we aren't separate; that does not mean that swimming in an acid mine lake is equivalent to swimming in a clear glacial lake... one is more likely to kill you than the other.
You mentioned studying philosophy, you're confusing your ontological and epistemological positions.
In that case, we should just eradicate all life on this planet because any action we do is natural....
...or, we could actually evaluate the transition of life from natural to technological. Yes, in a philosophical sense, you are right, what we do is "natural". But then if we just say everything we do is natural, then we might as well just do nothing. But there are still meaningful distinctions between the technological human organization (even if natural) and the rest of the world, and we would do well to examine if what we are doing is really harmonious with everything-but-us -- because if not, then I reject it outright even if it is natural in the sense that you describe.
You mentioned studying philosophy, you're confusing your ontological and epistemological positions.