en.wikipedia.org/wiki/Affection

To touch has a healing quality to it.

Especially when the hug or handshake comes from a trusted relative or friend who does no harm, but with affection.

A romantic relationship can develop into a sexual one, but will always include affection.

All humanity searches for affection through acts of kindness, compassion and care.

Different people and different culture will express affection in various ways, but to be human is to be affectionate!