Roswell and Area 51 are nice. Sadly it all has nothing to do with aliens and flying saucers, but more with water, soundwaves, WW 2 and downed pilots that needed to be rescued.
Not saying that aliens don’t exist. Only we haven’t found or encountered alien life yet.
The universe is vast and if one is inclined to believe in a G-d and a purpose for us being here, one should also believe that because of our nature it’s probably best that the closest distance to any other forms of life is far enough away from us to be save.