It's not a problem for me. All I'm doing is trying to clarify assumptions.
For example, you say that science "cannot use God as any sort of causation, and yes, it is therefore limited in its scope."
But again -- if God exists and created the universe, and I'm a scientist hammering away at the idea of what caused the universe, then I've got a real problem if I don't include God among the possible causes.
Now, I tend to agree with you when we discuss scientific stuff in a purely mechanical sense.
There's no real way for science to go back before the Big Bang, at least not based on what we know today. I don't think any scientist is working on figuring out what caused the universe because it's clear that's a question we're incapable of answering scientifically.