Content comes in a variety of styles. Finding the passion is the goal of all writers. However, few writers can do it all:
Business (not the same as any on this list)
Each has a "style" and accepted set of rules. One can learn the rules for any of the above, but unless there is a passion for the effort of writing and the subject, getting good results is problematical. Also essential is full knowledge---or at least a working knowledge---of any subject/theme for the author to be convincing. Sometimes experience is required.
Not all can write, just as not all can sing, or act, or run multi-national businesses, or---websites. However, one can't find out until one makes the effort and then gets feedback on the results. We do best when we recognize our strengths and weaknesses and capitalize on the strengths. Which brings me back to why one should write: passion. Have that, a reasonable vocabulary (middle school), a logical mind, and great things can be done.