Lubricants increase pleasure. Your genital skin is very sensitive. It cradles the nerve endings that allow you to experience touch and other sensations. And although skin is strong, it can be harmed by vigorous rubbing. Sexual intimacy usually includes friction, and often the body doesn’t have enough wetness or protection to last for an entire intimate episode. Lubricant can make sexual experiences more slippery, cushion-y, comfy, tasty and pleasurable.