Filters allow added control for the photographer of the images being produced. Sometimes they are used to make only subtle changes to images; other times the image would simply not be possible without them.
—FILTER (PHOTOGRAPHY) WIKIPEDIA
Digital cameras are excused from most of the color conversion filters, since you dial these in as white balance settings.
So you have a digital camera, and it takes great photographs. Could you do any better by using filters? As the lawyers say, it depends. There are two types of filters you might consider. First and most important is the polarizing filter. This can give control over reflections ...