Or it could be that God does exist
If it is true, the burden would lie with the person offering such an idea to make their case, if you're such a person (this is probably the part where you claim you aren't even though really you are) then you can make your case and people who wish to can respond to it.
and that your ideas about Christianity and burden of proof just aren't particularly useful.
You don't know what my ideas about Christianity are because you haven't asked me, and nor have I expressed any.
I guess if I'm right we'll all know soon enough.
Not sure what that's supposed to mean, not going to lose any sleep over passive aggressive threats though.