I've found very little about the actual definition of human instincts! Besides reproduction, perhaps violence, & one or another item, seems there should be a list! We are known to be a social animal, which, to me, means that gatherings & mob mentality (not only in the negative sense), are our instinctual drives. This instinct along with our musical instinct & a belief in a higher power , gives reason to believe that religion is another instinct. Singing the praises of our Lord; however defined, is critical to our evolutionary path. In order to evolve, seems we must gather & sing (or groove in any respect), with The One beat, that our intelligence has enabled us to broadcast around the globe?!!!