No, many students will begin college without knowing a major. And, of those students who have chosen a major, many will change it at least once before they graduate. As your interests become clearer to you, choosing a major will become easier and less confusing. As a general rule, the best major is one that interests you and challenges you. Ideally, you will enjoy the classes in your major.
Many students are concerned about how major choice relates to potential career fields.
There are a variety of resources at PSU to help you with decisions about your major and career interests. No, it is better to major in an academic field that interests you rather than trying to make yourself adapt to a growing career field. Labor market trends do matter when making career choices, but it is better to consider trends after you have narrowed your own interest areas. In other words, don't begin your career decision-making process with what's available, begin with what you would you enjoy doing. Also, it is very difficult to predict that any degree of accuracy just what the job market will actually be like in the next five years.