All the time! Well, maybe not that much anymore, since I've just moved in with a girl.. and I don't think she wants to look at me pee.
But back when I lived at home, I didn't have any problems with doing no. 2 with the door open xD
But really, I'm a lot like Rantzien when it comes to this.
I'm not too concerned either way. I change it up!
...
I don't usually close the door, even if someone's home. It's just peeing. If someone walks past the door, it's no more revealing than it would be in a public bathroom and I was at a urinal.
Also guys. When I'm at a public restroom and all the urinals are occupied (by all occupied, I mean every second one is taken because no man likes to pee between two other men) and I have to use the stalls instead, I'll leave the door open. Back's to the door anyway.