Cats lick to show love and affection, similar to grooming behaviors in a feline family.
Licking transfers your cat's scent, marking you as part of their territory and family
Kittens learn grooming from their mothers, and some cats continue the behavior with their human caregivers.
Cats use their tongues to explore and taste the world, including the taste of their human's skin.
Licking may be a way for cats to get your attention and initiate interaction.
Licking can be a calming behavior for cats, helping them reduce stress and anxiety.
Salty human skin might attract cats to lick for the taste of sweat.