I think neck kissing is the sweetest thing a person can do, other than hug you from behind and kiss you or morning kisses. It could be a major turn on to some people, but I think it all depends on how the other person kisses your neck. They could absolutely devour your neck and it could turn you on, or they could leave light kisses and make you fall in love with them so much more. Either way, neck kisses are the best.