Since the success of the Penrose Hawking singularity theorems many people have claimed that the universe must have a beginning . In recent years though people have explored models of the universe that resolve the singularity and imply the universe may have existed before the big bang. In such models the universe may exist forever into the past. Of course nobody knows which models are correct, was there a singularity or is it just an artificat of pushing Gr beyond its regime of applicability.?But it seems to me whichever answer is correct some form of infinity is very hard to avoid. if there is a singularity then the temp. pressure, density, curvature etc are all infinity. if there is no singularity for example as is claimed in LQC and many other models then the past is infinite. So it seems to one way or another infinity is almost inevitable. ( i say almost as there may be ways to have a finite past without a singularity but such models have their own problems ). Is this a fair summation or do you see an error somewhere?