Afraid, well, I don't think anyone is really afraid, but in the spirit of your question I think most people will use what is available.

It could also very much depend on space and how much penises are in the latrine (or other shared space) at the same time Us guys I think might have a thing about sharing close, tight, damp spaces, unless it's a Vagina, but even then we'll have a problem having our penises out and being in close proximity to other men with their penises out.

So we're not afraid, I think it's more of a built-in safety mechanism - which some guys are not born with I might add.

Same here but don't have a piss lag when I piss at home. 

Yeah I actually only think it happens when I drink and the only like I use urinals is when I drink lol

micro penis obviously

Same, only time I see guys using the toilet is when the urinals are all taken. 

Maybe it's an American thing?

No. If I need to use the restroom, then i'll use it. As long as it it isn't extremely horrible looking. I have standards, albeit very low ones. lol

I troll people in the urinals when I'm in school. Usually when one person is already using it I place myself in a position where the next guy has no way of avoiding having someone beside him. It's hilarious in theaters

Because I only use the toilet at home, once per day

I enjoy privacy. I have used urinals though. It's not like I'm going to die if I ever have to use it.

(Overall, though, I hate public restrooms. They are like an incubus of germs and nasty-ness.)

Shy bladder. If there's no-one around, i can use the urinal, but if anyone else is in the bathroom with me, i have a hard time even with the stall.

Probably has something to do with getting made fun of in elementary school