If I ended up being wrong and a god did exist I'd just tell him/her/it that they did a piss poor job of convincing me of their existence

When I'm asked that question, I always answer with, "Then I'll give him an opportunity to explain himself."

Real or delusional, the god of the bible is nothing more than a genocidal, homicidal, psychopathic, maniac, not worthy of anything but contempt and exclusion from any sane society. (IMHO)
ETA: “The God of the Old Testament is arguably the most unpleasant character in all fiction: jealous and proud of it; a petty, unjust, unforgiving control-freak; a vindictive, bloodthirsty ethnic cleanser; a misogynistic, homophobic, racist, infanticidal, genocidal, filicidal, pestilential, megalomaniacal, sadomasochistic, capriciously malevolent bully.” - Richard Dawkins

You said it all... thanks.

I've never got that. If the christian god was real -pretty big 'if' but its made the entire universe and everything in it. Why would it be concerned if I did or didn't sing it a few songs and ask a favour or two on a Sunday?

I was just asked this question today. I told them Pascal's wager was the dumbest thing I've ever heard. They had no clue who Pascal was, let alone that they were basically quoting him. Religion makes people dumber.