Understanding Search Intent is key to producing relevant content that will be useful to your visitors. Generally visitors are either browsing, actively researching or buying. If you want to buy a new car, you will probably start by browsing, move onto compiling a shortlist and researching them and finally identify a dealership in your area that you might buy it from. By creating content that speaks to your visitor's interests and questions, you are creating content that is useful to them. Not only is this good practice, but Google favours it.