Your argument is that in order to believe that “aliens” exist we must study this subject from an empirical scientific point of view and there’s your issue, you believe what “science” has told people: to look into things using the five senses and if you don’t have result it means that it doesn’t exist. Your issue is about people’s believe about this phenomena and how can they “believe” it “with no scientific study” but you are already believing what science has teach you about analyzing things and I might think that you neither doubt its established notion about things. You want proof, study the phenomena with the other senses that you have, you’re gonna bring it right to your door.