To some degree, the advantages vary depending on your choice of a specific science. Overall, though, most science majors can open up opportunities for a wide range of well-paid careers or help you get admitted to a range of postgraduate and professional programs. The outlook for employment opportunities in STEM (science, technology, engineering, and math) fields is excellent, with demand consistently outpacing supply. Another advantage to majoring in science is that it develops strong analytic skills, which are useful in all walks of life. Finally, technology is increasingly important in all aspects of our lives, and a science background helps you understand how technology works.
The main disadvantage of a science major is that it requires hard work and substantial amount of time studying and working in a laboratory. If you do not have strong work habits, you may struggle to do well in science. Also, students in science classes may have lower GPAs than students in easier subjects, although most employers will take into account the difficulty of the courses when they assess your academic background.