Good exists - a Catholic comments

[Bucky Ball]

Premise #1: If god exists, he exists necessarily. 

Wrong, If a being exists "necessarily" it's not a god, and it would be subject to the laws of Reality ... ad that's not a god. 
Plantigna destroyed in the first premise. No justification, nothing but an assertion. The end.

-disagreeing with a premise is generally disagreeing with the soundness of an argument, not it's validity.  As I said before, I also disagree.  As it so happens I disagree that the argument is sound.  Still...do you want the faithful to keep bombarding us with "If we came from apes, why are there still apes?" bullshit?  Let them make valid arguments and we can..at least...have an intelligent discussion, and intelligent disagreements.

If premise 1 is false, there's no point in going any further. 
The rest is a waste of time. And the entire argument is unsound. 
If you want to listen to the rest, go ahead. I know the whole thing is false at #1, as is Plantigna and Anselm.