Hi, I'm a current masters in social work student. I think the MSW is usually considered a professional degree and not a stepping stone to the Sociology PhD. Also, check with the school you want to apply to and see if they think you need a sociology background. From what I hear, lots of sociology doctoral programs take people from related fields such as yours, including the top ranked schools. I considered Sociology, but with my interest and experience, Social Work is a better fit for me (as of today). Anyone in Sociology have a take on this?