Everyone needs love, care and attention, and physical contact. Some more than others, babies more than most. Why do we kiss, hug, and hold or shake hands? It's

Everyone needs love, care and attention, and physical contact. Some more than others, babies more than most. Why do we kiss, hug, and hold or shake hands? It's not for no reason or because we feel like it. There are definite and extremely good reasons and explainable pressures that have led to all of our common behaviors. Behaviour often comes from evolutionary pressure. Without fully understanding the selection pressures that led to such behavior, and if they are similar or have changed, dismissing it out of hand isn't considering the whole picture.