Will most people go the three lower dimensions (hell, animal womb, ghost realm)?

"In the same way, monks, few are the beings who, on passing away from the human realm, are reborn among devas. Far more are the beings who, on passing away from the human realm, are reborn in hell... in the animal womb... in the domain of the hungry ghosts." (Pansu Sutta, SN 56.102) According to this quote most humans go to the lower realms. This doesn’t make sense to me because majority of humans though imperfect are ethical and moral. How true is this? How strict should we live our lives so that we can be reborn to a higher dimension?