Start out in an MS program that lets you develop a research based thesis. After your first year you will have much more knowledge on whether the PhD track is r

Start out in an MS program that lets you develop a research based thesis. After your first year you will have much more knowledge on whether the PhD track is right for you. Get to know your classmates that are PhD students and their experiences. Get to know the projects in your department that have provided PhDs to others. If you find something interesting then the PhD might be worth the effort. No matter how much advice from others, only you will know when the time comes.