I don´t know if you are really concerned for YOUR faith or what MANY people think (and want you to belive as truth).
First: I don´t care what those theories have said. It´s easier to believe in GOD rather in men.
Two: Will you believe I have seen two stars moving in the darkness of a starry night? I was used to read about those Maggi who came to visit Jesus, after He was born in Belen... I had some doubts, because I never knew "stars" can move as fast as an OVNI... There was a night when Monica and I saw two of them, flying that sky where we saw -at once- thinking it was a colective illusion we both had: It wasn´t an illusion.
We were praying and asking GOD to give us a sign (that "OVNI" were a sign we saw with awe). We wanted to know what to do, we prayed, and that sign appeared in the sky... (I think I wrote on the subject, somewhere else). Does this prove anything? Yes! we were asking for a SIGN and be both saw it and get it (I´m talking about Monica and I). It proves those maggi on the Bible saw a "star" pointing out wher to go to meet the Lord Jesus (just allow me to call it a star, but it was not a star, but an UFO).
Three: There are many things we cannot grasp or believe unless we see it or prove it, but I´m not the only crazy nut who have seen those signs in the sky. That "theory" could be lived out by those who had their chance to see it and, the evolution, serves to "prove" men are "smarter" than GOD... Do you believe it? I don´t.
you are RIGHT when saying "religion is an invention", but the moment you see, by real experience, what´s real and what isn´t, you´ll be saved from theories to walk your own life, no matter what other say (although crazy people think they´re not crazy). Just think of Moses staring at a burning bush. Was it possible or not? Just look at Jesus ascention... Was He taken or He had some wings "to fly"?
I was in the place you are now. It took me years to recover, but I believe my life and my experience. No matter what others want me to believe: Your faith and experience is your possesion.