This definitely is a philosophical question, since the time/space outside of this theory cannot be theorized about scientifically. Since (assuming it happened) things expanded exponentially at insane temperatures in the first fraction of a second, one must assume that something happened on a macrocosmic level that was analogous to a hydrogen bomb exploding. And did something come from nothing? I find that hard to accept. Before the universe really began, it must have been a long dormant highly condensed ball that was triggered by something, no?