This is really more related to the comments that Pat Ballew and Jenny Kotlerman made in the 'Is AP Stat a 'soft' AP?' thread, concerning the comparison between the college stat students they observed this past year and the high school AP Stat students they currently teach. In my experience, most of the students in a college intro course are majoring in a field related either to business or to health careers. They initially sign up for little other reason than "they gotta," and without them, the course wouldn't even 'make' or be offered. (I try to make their experience as much of a pleasant surprise as possible.)
The question, open to all: What do you find mainly motivated your students to sign up for AP Stats? Does it tend to be more for the honors credit/ college credit, or did a significant percent see statistics either as something important to delve into or as part of their long-term educational goals (do many of yours have such goals yet?), or were there other reasons?