Another nice thing, when you hit the recirc after using the air conditioning, it allows all the moisture to be purged from the system so you have no foul smells next time you turn it on.
Yep...also extends the life of the evaporator. I always turn the A/C off minutes before arriving at my destination, particularly after a long trip to "dry" everything out....I have done this for years with my cars, starting with a '94 Volvo 850 that were famous for failing evaporators. Years later Volvo implemented a blower that continues to blow for a few minutes after turning the ignition off.....