I put other because I can rarely think of a time when I'm dead in the center of the lane. I'm all over the map baby
But seriously you ride where you need to be or whatever is appropriate. There are roads back home with 65 mph traffic and huge shoulders and there I would ride confidently on the shoulder, risking flats over being rear ended. But here in the city I'll take the lane or hug the curb for a second if I've got a big backup and am feeling generous. I think the most important thing is to just be adaptable.