Yeah, we really need a humidifier. Our house is very humid (old farmhouse, dirt floor basement) but our bedroom is very dry since we have an oil heater in there.. it is less drying than the fan heater was, but I still wake up with my throat as dry as the Sahara desert.
Funny, you would think that a moist, wet airway would attract more bacteria than a clean, dry one.. but I am no medical expert.