... at least for me. It puts me at about the 2nd rafter from the peak (or 3rd rafter if you count the first rafter itself.)
Positioning near or at this distance allows for the laying of ridge cap shingles. (They're usually done at 5" intervals.) Sure you can go further out to the peak (I guess I implied that your couldn't) but it's not necessary. I assume the gable vent is sufficient for making up the 'rest' of the airflow.
IMO, it looks nicer because there's a tapering-effect. I'm not trying to sell this 'perspective' but that's all I've got for ya.