Having supposedly disproven religions "God" they still haven't disproved "God" as a whole.
Well, depends on your criteria for proving something.
I assume by "God as a whole" you mean an
immaterial,
atemporal,
aspatial creator.
I can't speak for scientists, but here are the issues that
I personally have with the concept:
1. Neuroscience suggests that the mind is an
emergent property of
physical system (brain), not something that can exist independently in vacuum, let alone "outside of space" and "outside of time". One can of course imagine God as some "special mind", beyond our comprehension, but that would be groundless speculation.
2. Atemporality and aspatiality are also very queer attributes, all the more so for a
sentient being. Sentience implies mental processes. Mental processes are events. How can you have events without time, and space? Ah, it's all so far out there...
3. Supposing there was some eternal predecessor to BB, I find it more reasonable to imagine it is a natural, unconscious process, and not some super-mind with an agenda.
Less they have come up with a reason for the big bang occurring I haven't heard of. Doesn't seem more logical for them to be agnostics then atheists?
Even the notion that Big Bang had to have a "reason" for occurring is a questionable assumption. Who says there is no randomness? Not most contemporary physicists, I reckon.