Why are scientists investing so much time and money into finding out whether other forms of life on other planets are sending signals our way? Why would be even be so arrogant as to think that they would be trying to contact us?! Maybe some other forms of life exist, know about each other, and are content with it. They could even be aware of us but feel no need to get into touch. Wanting to reach out and communicate is a human need. Not necessarily a need of another form of life. Therefore they might not even ever “think” (or equivalent) of sending us radio waves, popping over to visit us, or anything like that.