Answer : Interior decorators are experts in the field of interior design. They aim to have clients work with their own natural taste rather than impose on them an idea.
Interior design is a profession: by working with your own taste, you will end up living more happily in a space that suits you completely, instead of something someone else imposed onto you. The communicative skills needed for this position make it easier for the designer to engage in conversation and find out what your personal needs are in order to achieve the desired results. Some people can totally do this themselves. But if they can't or don't know how, then hiring an expert is essential!