Imponderables

I recently asked the following questions, to which I have yet to receive an answer:

1. Under the category of useless features, why do air conditioners have remote controls? How many changes to the temperature are made in a single day?

2. Why do the batteries on smoke detectors only die at night?

3. Why is it that I’ve never heard a man complain about dry skin yet I hear women complain about it constantly? Are men genetically superior in this regard?