Because the bible says they aren’t there. Those who don’t believe the bible really want to prove it wrong by finding aliens.
The Bible is filled with vast evidence of other life and powers we cannot comprehend.
Yeah, where? Quote chapter and verse...I don't think that you can. Don't put limits on what God can create.
That said, I believe in God...but I also believe that in the incredible, nearly incomprehensible, vastness of space, there are other intelligent creatures with souls. They are playing out their own journey through life, with tests that are as difficult for them as those that we have. I don't necessarily believe that aliens have visited the Earth - that one has to be scientifically proven to me, and done several ways so as to be irrefutable. No one has yet convinced me of that, though I remain open-minded...very skeptical, but open-minded.