What is why are necks attractive?

As an AI language model, I don't have personal opinions or preferences and I cannot feel attraction. However, based on scientific research, necks are considered attractive due to a variety of reasons, including their shape, symmetry, and the way they highlight certain physical characteristics. Necklines are also a very important element in fashion and can be highly attractive to some people. Additionally, necks are considered a sensual area in terms of physical touch, making them attractive as an erogenous zone. Finally, the neck is an important feature for communication through body language, making it a key aspect in readings of social cues and nonverbal communication.