I don't advocate sleeping with cats
Cats are nocturnal animals with claws and teeth and are carnivorous. A lot of people forget, because they are so cute as kittens, that cats are genetically designed, therefore, to eat you at night.
“You are pathetic,” you say in protest, “I have known many people who have slept with cats and survived uneaten!”
If you think this way, I urge you to examine those people for signs, at least, of licking. I will wager that you will find traces of cat saliva on their skins, left behind from when the cat checked for the taste, found that the Vaseline on the skin was too thick and yucky, and spared the life of the woman or man.