Killing children or kin just to save time, for example. I can't contribute, unfortunately, I am not involved in many speedgames.

Well, at the end it's just a game anyway ¯_(ツ)_/¯

choosing Mythra over Pyra in Xenoblade Chronicles 2

Yoshi, I know. Tbh, I find it rather funny. Let's just kill our best friend because he's in the way of the direct route. ;) E: Or because we don't want to waste time talking to him.

Throwing cat familiars in Rondo of Blood just for them to die.

NOT picking up delicious ice cream in Rondo of Blood because of muh frames.

I'm assuming you're talking about video games here...

In RCT I had a theory that bringing an alert up refreshed the value if a park, so to force a reset I tried drowning guests. It didn't work, people died in vein.

Saving the princess as a kid with a stick, because you don't have the time to age.

Killing a person rather than sparing them because the killing cutscene is a lot faster.

Killing Shinies because you don't have the time to be heartbroken.

Save the Animals? SGDQ 2017

Just kidding! KILL THEM ALL!!!

Not saving toad when he gets robbed or attacked by goombas in nsmbw

Abusing the crap out of my Monster to make it grow up faster for those sweet stat gains.... Oh monster rancher.