I would say these sex dolls are an innovation. Humans have always been into sex but have never really looked deeply into it in a sense that they have made actual inquiries of what could stimulate pleasure in the brain as much as actual human-human sex in order to explore for other alternatives. Sure there is a romantic feel to the whole sexual intercourse when it comes to couples, but there are those who just want to have sex casually, and for some of those these sex dolls are of great pleasure to them--works for them as sometimes casual human sex could be lots of drama and work.