I do believe in aliens. I grew up in a faith where the basis is the Bible. From what I understand, there is great controversy in heaven, war between good and evil. Satan and his followers were banished from heaven. Before coming to Earth, they went planet to planet but Earth was the place they were "accepted" or sin was allowed.

Therefore, there are other beings in other planets and universe aside from us Earthlings. They could be the same like us physically because were created just like God is.

If there are aliens, then that would be an affirmation of that belief. However, we still don't know anything. Everything is just an assumption.

I don't have anything to say about your other queries but surely many would question their beliefs.