Is it supposed to be common for people to think that the neck is not ticklish to them

Yes, it can be quite common for people to have varying levels of ticklishness on different parts of their bodies, including the neck. While some individuals may find their neck to be a sensitive spot that is easily tickled, others may not experience any ticklish sensation there at all. Factors such as individual sensitivity, personal experiences, and even psychological aspects can influence how ticklish someone feels. It's important to remember that everyone’s body is unique, and responses to touch can differ significantly from person to person.