The only thing that I liked about field service was the indepth stuff. Arguing the trinity and who go to heaven and other doctrinal material. I never wanted a Bible study because I can't imagine myself sitting across from someone and telling them to read this paragraph and then to answer this question, and then to tell them how to live their lives and then having them do the questions for baptism.
About 10 years ago I just stopped doing it because I just don't care about these random people we are meeting at the doors.