Answer:
Because it provides experience.
Step-by-step explanation:
Prospective employers will value your participation in professional organizations because it will make you an employee with professional experience.
Professional experience is always a factor that you should be aware of if you intend to be hired at a renowned company. This is because this is a part of the curriculum designed for what you actually accomplished during your professional career. In this sense, it offers greater security to recruiters who can analyze whether the candidate deserves to be called for a job interview.