I think we have two issues running concurrently here:
1) The loo lid – supposedly stops the mushroom cloud of fecal coliform, but in actual fact doesnt unless you have a hermetically sealed one! Some may suggest the loo looks better with it down.
2) The loo seat – women want it down so they dont fall through the loo when they cant be arsed turning the light on to check whether they’re going to fall through the loo. So they insist we make up for their assumptions and lack of thought.
In answer – 1) Loo’s are ugly anyway, having the lid down makes no difference to how ugly it looks unless your family is prone to leaving presents visible…
2) If you want the seat up, put it up, if you want the seat down, put it down. Dont expect it to be in either position, if you fall into the water at 3am you have a tiny arse and should re-think your laziness.