What would you consider to be evidence for God?

[Wyrd of Gawd]

The first question "is there dark matter" is like asking if there is a "god" or "whatever" your little heart desires.  The second statement about "I think dark matter is X - Y & Z" is religious.  The fundies, take it 10 steps further. No need for me to address that part. 
 
In relation to god, Asking if it is more reasonable to claim "there is something"  then it is to claim "there is nothing" or "I just lack a belief in something." is like stating the same about dark matter.  The evidence suggest "something", just because a person "doesn't believe" is irrelevant. and to say "I don't believe in anything anybody says is just stupid.

Claiming to know what "dark matter" is tricky.  claiming to know "what god is" is the same as "knowing" what dark matter is.  We can make some guesses and some will be more reasonable than others.  But still, something is more reasonable than nothing. This is a little more tricky because we can take some reasonable guesses about dark matter.  But they are still guesses. From the more "nebulous"  WIMPs to the straight forward gross under estimation of regular matter.  And there are crazies that will make far out and unreasonable guesses.

Like the sig that compares mermaids to seals.  "I saw something" is more reasonable.  Sure it aint no merman, but it was something.

to be continued ...

An intelligent person should know that "dark matter" is BS because there isn't a speck of it in our solar system or even in our own galaxy.  What is happening in the voids is that hydrogen is being created from quantum foam (aka as "nothing").  Once hydrogen is created in sufficient amounts it clumps together into balls due to its gravity and then ignites into stars.  The stars go on to cook up all of the other elements and the universe keeps expanding.