I would put myself in the two night/two day category (haha, didn't see that one on the poll!
), simply because I can leave work on a Friday afternoon and drive to set up camp, and then spend Saturday and Sunday camping.
I agree, maximizing wheel/camp time is a priority, and this poll is an excellent idea.
Also, as far as the camping style (primitive vs. more amenities), I would lean more towards the more amenity group, as I often camp with my 10 year old son, and the availability of toilets and running water is of value to me. Although, with proper planning and preparation a primitive camping trip is not out of the question.