Why would the burden of proof lie upon me? Am I God?
Do you claim that God exists? If so, the burden of proof is yours to offer to a person who doesn't accept your claim as true. A person who doesn't accept your positive claim about God has no obligation to prove you wrong. If you want that person to believe in your God, you must offer sufficient evidence to convince that person that your God is real. You bear the burden of proof.
If anything, it [God's non-existence] is something you need to prove to yourself before you can be so sure that He does not exist.
The lack of evidence to prove God's existence is enough for me to accept that God doesn't exist. Or put another way, the lack of evidence is enough to prevent the conclusion that God does exist.
Once again: If you claim God exists, the burden of proof is yours. What can you offer that proves that
your God exists?
And for the record:
I'm not sure your God doesn't exist, contrary to what you believe you know about me. I always leave open the possibility that your God exists, just as I leave open the possibility that other gods exist. But until someone offers sufficient evidence to prove their god exists, I don't accept their claims about their god. I prefer to be led by reason in this matter, not faith. If you believe I'm wrong, then reason your way into an undeniable explanation that proves your God exists.
Rabbet