The Illuminati exist?!!... 

 ...
Well, there's the original Templars that were rumoured to be part of the illuminati, and that's the 1100s so...Maybe you're right...I wonder if he 
was called Santa Claus back then though...
Booyah!...
Mine is this....
We are 
not alone in the universe...There are simply too many 
billions of stars in the Milky Way (
our Galaxy), let alone in all the other billions of other Galaxies dotted about the expanse for life to only have happened on 
this crap pile...
And none of this, "So where are they then?"...Space is big...Impossibly so...The chances of it happening next door are so close to zero as to be not worth mentioning...
Absence of proof is 
not proof of absence...