According to a Taiwanese minister it would create a cleaner environment. He also says they should learn from “Japan and Sweden.”
Men in Japan and Sweden pee sitting? Girls.
Both. I prefer to sit at night and stand during the day. It has to do with lighting levels and presence of a urinal (I’m mildly annoyed by having to raise and lower the lid, and water splashing out of a toilet onto my feet and slacks is unpleasant).
Maxim magazine readers would call me unmanly, but I have nothing to prove to such people.
After 7 years of working in a building mostly populated by men with toilets (no urinals), I concur. A good proportion of men cannot piss for shit.
Sadly, the combination of waning bladder pressure and increasing prostate constriction means that I am reaching that point in my life where I have to contemplate that move personally. There is no way I can get two streams at 90[sup]o[/sup] into the bowl at the same time. Either that or I have one directable stream, and risk a dribble on my shoes. 
Si<gh>
Anyone who cant, without fail, aim and get a bullseye, and thats pretty much all 'a ya’s, should sit to pee. Better for your prostate anyway.
What?
If you clean the bathroom yourself, pee standing up, I don’t care. If someone else cleans the bathroom, sit down.
We should all just adopt the Asian style toilet, then the problem would go away.
Don’t cross the streams!
I generally sit. Unless its a quicky at a gas station or the like. Or behind our shed in the back yard.
It depends on how gassy I am. If I’ve got some serious ammunition in the chamber, I usually sit down so I can vent it with my urine. Otherwise I prefer to stand.
This. I won’t let any Swedish social engineering sitzpinkler dictate to me how I drain my lizard, either.
Situational. At 3 am I’m more comfortable not even turning on the light, just sitting. On kayak trips I use a plastic urinal in my boat. In a bar’s men’sroom I stand.
For a variety of reasons, my aim and pressure are unreliable. If a toilet is available, I use it. I only stand if I’m outdoors.
Pee however you like but don’t leave the evidence behind. If you dribble clean up after yourself.
This guy has obviously never been inside a public toilet for women. It is disgusting how often females of the species can’t seem to master the simple act of urinating into a toilet bowl. I can’t help but think men wouldn’t do any better.
Pretty much this. Everything else is personal choice, but this isn’t. 
At most places I stand. At home I almost always sit, because less cleaning is necessary.
I almost always stand, and it appears I am not alone in stumbling to the head in the dark and sitting at night, though.
As far as mess…I keep a package of Clorox wipes in the cabinet above the toilet. If I see it needs it, I’ll just wipe it down real quick. Takes 30 seconds and makes it safe for company.
I just remembered something from my youth. I was seriously considering going into the Navy in a serious way. All kinds of testing…physical…mental…skill wise blah blah blah.
One of the test I needed to pass was literally can you pee standing up straight at a urinal. Even then I thought “is this really a problem that needs to be tested for?”
There’s a Hank Hill joke in here somewhere.
I said, BETTER FOR YOUR PROSTATE ANYWAY!!
(sorry, couldn’t resist) 
Urinals use less water and less space, and standing to pee takes less time (unzip, whip-out, pee, tuck-in, zip - instead of unzip, unbelt, drop-trou, sit, pee, pull up pants, tuck in shirt, zip up). If men all sat to pee, the lines outside mens’ rooms would be as long as the lines outside ladies’ rooms.
If I wake up in the middle of the night to pee, I don’t want to sit on the toilet; it takes more effort to return from sitting to a standing position than it does to maintain a standing position.