Well, obviously the logical reasoning applies as soon as we realize there is probably no end to the slope.
But there's no reason why there
shouldn't be an endless slope and a beginningless succession of causes --- or if there is, you have not yet articulated it. You say we shouldn't get on that slippery slope, I say, why not?
Of course, we would want to know, but that really isn’t the point. There would be no way to know, for example, that there was a meta-multiverse generator outsideor causally priorour postulated multiverse. Fifty such causes I think would call for a liberal application of Occam’s razor. Wouldn’t you agree?
Well, now try applying that reasoning to a god outside our observed universe.
In any case, my point still remains. Going one step back from God doesn't
commit us to going an infinite number of steps back.
Edited by Dr Adequate, : No reason given.