Would life on other planets pretty much destroy much of Earth's religious myths?
I would say no, mainly people on earth want sometype of religious belief system. It would take some hard physical evidence to convince people to believe differently. To me our physical bodies are not ment for space travel, our spiritual being is to figure out what path we selected.
It's interesting you mention that movie Contact in that movie Jodi Foster's character, her physical body did not leave the earth but her mind took her to a different universe. Maybe thats what we as human beings need to achive without mind-alternating drugs and alcohol.
~desbah~