dehumidify

I found one topic about energy saving. In summer, we often use air conditioner in our room. Too much its using is one of the cause of global warming. Then, the topic suggested the good point of dehumidifier. The cause of our discomfort in summer is humid. If humidity decreases, we feel coolness even there's temperature is 26-27℃. So it is good for saving energy and our electricity rates that we set room's temperature to higher and use dehumidifier. Why don't you use it??