People think it because (at least up until this research, which is in very early stages from the sounds of it) it was the model that most closely fit with obser

People think it because (at least up until this research, which is in very early stages from the sounds of it) it was the model that most closely fit with observed data. Why would you say there "can't be" a beginning to the universe? If the big bang did indeed occur, it certainly doesn't mean our current universe is all there ever was or is. Nor does it provide evidence as to external intent or reason, or the lack thereof. How you could so casually write off any possibility of the universe as we know it having a beginning baffles me.