Simply because we are humans, our imaginations are limited to human level of intelligence.
Would such beings tolerate us or replace us? Humans surely do not want to give monkeys and dogs voting rights, hi-tech knowledge, etc. not only because humans are as selfish as all other live forms, but also because humans distrust all other life forms because humans believe humans are most intelligent and thus only humans need to have power over control of the only planet humans reside on. For that matter, why would any god tolerate or even acknowledge humans if there’s any?
It’s very superhuman and reasonable to hope and expect to see another life form that is also much more intelligent than humans. But it’s even more superhuman to hope and expect to see yourself (and for me, myself) go extinct. The former isn’t important as human feelings and thoughts simply don’t matter in the eyes of superior and godly beings. The latter is because it could help make the pain of loss easier.