Oh, boy.....
first of all-lets address the whole "Keeping man's eyes off of God" thing.
Faulty Argument-after all, to a true believer, if God allowed life on other planets, then He would have also provided a personal Savior for them,
too.

Now, if the Greys. and Reptilians were appearing and saying...."Ignore that God of your Fathers", then, yeah, maybe.
Second-The Eliohem gathered togather and said...."Let US make man in OUR image". The Bible never said that the only beings were God, Angels, and
Mankind. Wouldn't you think something that important would have been in there?
Third-it is not Black and White, "Of God", or "Against God". Because Man is a very Poor judge of what is pleasing in God's sight.
I could go on, but I think you see my point.
We are arrogant to think we are alone in the Universe.
We are even more arrogant to think that WE hold the answers, in this life anyway....