It's important to note that atheism is a diverse philosophical position, and not all atheists necessarily believe that the universe came from "absolutely nothing." Atheism, at its core, is simply the lack of belief in a deity or gods. It does not prescribe a specific explanation for the origin of the universe or the nature of reality.
Regarding the idea of "nothing comes from nothing," it is a philosophical principle that has been debated for centuries. In modern physics and cosmology, the concept of "nothing" is often redefined due to the insights gained from quantum mechanics. In the quantum realm, particles can spontaneously come into existence and disappear again without any apparent cause.
However, the origin of the universe remains a topic of ongoing scientific and philosophical inquiry. Some propose that the universe arose from a singularity or through processes like the Big Bang, while others suggest theories involving multiverses or other forms of pre-existing conditions.
As for "doubting Thomas," it's worth considering that individuals have their own reasons for accepting or rejecting certain ideas. Accepting or rejecting a particular explanation for the origin of the universe can depend on various factors, including personal beliefs, experiences, philosophical views, and the available evidence.
It's essential to engage in open-minded discussions and consider multiple perspectives to gain a deeper understanding of complex topics like the origin of the universe. Scientific and philosophical inquiries continuously evolve as we learn more about the universe and refine our understanding of reality.