Also, have you met any Aztec? There are barely any American Indians left compared to the millions there were originally.
Mammuts? All the giant marsupials of Australia that went extinct the moment humans set foot there?
We've been on top of the food chain for very long. Now imagine if we discover another race may take our place and the only option is communication or total obliteration?
I wish it was different, we only have a sample size of one.
But just like the three space ships that first found out about the dark forest and ultimately killed each other, it's what makes most sense from game theory
But we're pretty sure we obliterated a entire species in our way up the food chain ( giant marsupials for example)
Humans had the power to exterminate many more but chose not to, and continue to choose not to.
Saying "we didn't kill them all" doesn't exempt the fact that we did it for many of them.
There's no easy answer to this. We are what we are. But it points to the disregard powerful beings have over weaker ones when they get in their way.
Especially the predators that compete with us.