I think their will be a big need for them. I don't know if sociology or psychotherapy will be practiced in the traditional sense, but the world will be going through tremendous changes this century. People in the past had much more time to adjust to a changing world. Communication and progress was relatively slow. With the information age just beginning, everything is speeding up exponentially. People interact differently with one another and the environment. Social institutions like the workplace and school will have totally different dynamics. Why pay for buildings to educate when everything you ever wanted to learn can be streamed straight to your home (or brain even). There will be less and less reason to venture outside your doors to interact with the world around you. I think this will bring profound changes in the mentality of humans and there will be consequences from that. Not everyone or every group will adapt easily. Humans are social creatures and the lack of physical contact will bring sociological and psychological challenges to overcome.