I know, myself, that I don't like kissing people I don't love, and if I do love them in the sense of being hungry for them (I'm thinking back to my single days) --- kissing made me a lot hungrier.
All kissing leads to lust? I hope not, I give Mom a kiss on the cheek when I leave the house. Sometimes kissing is just kissing, most of the time, it's just a simple way of showing affection. Ms. Eden's even bringing it up in an interview, tells me she's trying to go for some shock value in promoting her book. Modern people are not offended by simple affectional kissing.