My personal favorite take on this is the Dark Forest concept (probably because I just finished reading the book).
It makes sense to me that unless there were some way of ensuring mutually assured destruction, any advanced alien race would simply eliminate any sentient species they became aware of that could possibly become a threat in the future (whether that's hundreds, thousands, or millions of years).
It makes sense to me that unless there were some way of ensuring mutually assured destruction, any advanced alien race would simply eliminate any sentient species they became aware of that could possibly become a threat in the future (whether that's hundreds, thousands, or millions of years).