Re: As far as I can tell, you can prove
"My problem with the infinite number of universes theory has always been that somewhere out there, exists a universe where they destroyed our universe at suppertime last Tuesday. That we do in fact still exist disproves it."
Here is an example of why your argument is invalid:
"My problem with the infinite number of integers theory has always been that somewhere out there, exists an integer that destroyed all integers at suppertime last Tuesday. That we do in fact have integers disproves it."
An infinite number of things existing does not imply that everything exists.