rabbiofberlin –
The Rambam says explicitly that one need not (or should not) accept all divrei aggada as historically accurate. We understand that the OP is not necessarily correct in implying that there is no basis for one to believe in an older universe. However, the Rambam also is explicit in many places that one who denies Torah she-Ba’al Peh is a full-fledged apikores/kofer. These are two very different points. The point most of the posters are coming at you with is your ambivalence toward the latter, not the former.