I have 10 years work experience and a masters. I have been desiring to do a PhD for some time now. Is it possible to do a PhD in 3 years from a top 50 university ?
Depends on what you want to get it in, and your career goals. If you would like to be a professor/researcher, the PhD is a requirement. One cannot obtain full professorship without it. Also, with an MS one CAN do research, however you'll most always be relegated to second or third author, and the title of "Research Assistant". Also, if its the scientific/medical field in product development (drug or otherwise), its also typically a requirement.