My wife complains because I don't put the toilet seat down. Why is this such a big deal? If I have to put it down for her, should she put it up for me?

Beth says:  Look, the natural order dictates that the toilet seat be down.  No one wants to touch a toilet seat if they don't have to.  If your bathroom style requires that the seat be up and you have to touch it anyway, go the extra mile and put it down.  It's the polite thing to do and may get you more sex in the long run.

Kevin says:  Here are the three main reasons I recommend keeping the toilet seat down. The first is that it is bad feng shui for the toilet seat to be in the open position, as all your chi will go down the toilet if the toilet seat is up. Second, the toilet seat should be in the closed (or, neutral) position, making it equally inconvenient for all persons in the household not just one gender or the other. And finally, the closed position makes it impossible for anyone to “fall in” while attempting to use the facilities in the middle of the night with all the lights off.