No, the simple reason why I always give it 100% (apart from being that kind of person), is because LFR usually have enough that are incapable of wiping their own ass by the looks of things, if I added another character being afk / not pulling his own weight, it would take to long to even consider joining in that "feature".
I wish there was an intelligent way so the system automatically dropped players who wasn't pulling their weight (essentially an auto-kick by the system, thereby also removing any drop chance for that person).
If that ever became a reality, I'd do more then the 1 run per month.., but as things are currently, there's to many mouth breathers n' warm bodies leaching the system.