Kungani abantu bezithanda izinja?
Abantu bayazithanda izinja ngoba zisenza sizizwe sihle. Lapho umuntu ethanda inja, amazinga e-oxytocin akhuphuka kuzo zombili izinhlobo zezilwane, okwenza zombili zizwe zisondelene ngokomzwelo. Le mizwa yokusondelana isenza sifune ukuyikhathaza kakhudlwana - nenja ifuna ukuthintwa kakhudlwana - okwandisa imizwa yokusondelana nokuxhumana ngenkathi ihlanganyela kulokhu kubuyisana okungokwemvelo nangokomzwelo.