Using a Doll DP for WhatsApp, Instagram and Facebook is a personal choice and can have different meanings or reasons for different people. Some people may choose a doll as a profile picture because they collect dolls or have a particular attachment to a specific doll. Others may choose a doll as a way to express their love for a particular character or franchise that is represented by the doll.
In some cases, people may choose a doll as a profile picture as a form of self-expression or as a way to present themselves in a certain way to others. For example, a person may choose a doll that reflects their personality or interests, or they may use a doll to create a certain image or persona online.
Ultimately, the choice of a doll as a profile picture is a personal one and can have many different meanings or reasons behind it.