There aren’t more females than males, there are more females who have chosen to enter the “shidduch scene” than there are males who have entered the scene.”
OK, we have a semantic issue here. If there are MORE females who have chosen to enter the Shidduch scene (and really, it is not by choice, much of the time – they are sometimes pushed into it before they are ready), then Hashem has still created more females than males WHO ARE READY AND AVAILABLE to be getting married. It matters little to me WHY there are so many more, but clearly there are, because even when the males ARE ready, by that time, MORE females have entered the scene as well.