Vision, can I just ask (and please don't take this the wrong way) what the point is in believing in something that you already know exists?
Oh, I never take anything the wrong way!!!
I ask you the same question reversed: what is the point of "believing" in something you don't know exists? I guess because you want it to be true? Then there is "faith" which asserts that a thing IS true. No proof required, it just IS.
I dunno. Different world views, I guess.
I don't KNOW that alien life exists, but I assume it does. Logic, and the size of the universe, make it seem likely to me. Not quite the same as "belief".
As for the existence or not of a god, I can't really argue or discuss that very well, I always wind up offending people and what's the point? Believe what you like, as long as you aren't hurting someone or trying to impose your beliefs on others. That sorta suits me.