Dont worry, if the space aliens wanted us dead, we would be. They wouldn’t even have to enter the solar system to accomplish that task. Just dont let Joe Biden anywhere near them, for the love of god.
So, if these aliens exist, we might conclude they they want something else from us other than merely our death.
Some people, by virtue of their religious faith, believe humans have value to a being (or beings) greater than humans. Perhaps humans have ransom value.
Or maybe we have slave value or certain of our body parts are considered delicacies to certain advanced species.
It is amazing how human thought with regard to aliens (who have yet to be encountered) seems limited by what we have seen or read about in historical science fiction.