I almost always want to fly. I look at the dates, and offer them in order of whomever expires first, depending on other situations (such as upcoming training, etc.). I pretty much only fly when I need to (will expire before the other pilots, lowgrossweight/aftcg takeoff, prm approach, etc.), or if no one else wants to fly/is there turn to fly. I don't fly very much, because I don't feel I need to, at my experience level. I defer to giving the less experienced pilots the leg. I would like to fly a LOT more than I do. And, I really don't like doing PM on the short legs (under two hours)...WAY too much to do in a short time period.