My worst fear is loss of personality. Not only are you technically dead, but there is someone running around with your face and your memories claiming to be you.
 
This is why Discord scared me. From my point of view, he basically killed the mane 6, and replaced them with their opposites.
 
Alternate realities, I’m fine with. They have different back stories. They dealt with things other than what the characters we know had to.
 
As for the image, killing everyone I know and love would tick me off at most. Mostly because they’re dead. I’m not going to do anything for a dead person. If you did it to fill me with rage, I’ll just step back, let you wonder why I’m not getting aggressive. If you did it to punish me, I’ll punish you more, be it physical or emotional. If you want to see me cry or suffer, I won’t. It’s just how I am.
 
On the other hand, I’d go after you to make sure you don’t hurt anyone else, and to do what’s right. If what’s right is to tell someone and just step back, that’s what I’ll do. If I came across this scene, I’d hold Fluttershy, take her somewhere safe, then get revenge for her before helping her try to move on. If she can’t… I’ll do what’s best for her. It’s just how I am.
 
And before anyone says anything, I know this is just an illusion, created from her worst fears. I’m just saying this to show, well, mostly myself who I am.

Morality is subjective, though. How one determines who cares about feelings is going to take a while. I flounder from being too empathetic to too indifferent.

@Shy  
An unfortunate truth. But it’s best to try, isn’t it?

@Pinkie
 
Like 80% of the people here actually give two fucks about feelings.

@Cotton  
Ah, I see. Apologies for the ‘troll’ comment then (to you, at least).  
I was more commenting on the idea that while the characters obviously won’t care (being cartoons, lol), such comments do tend to bother people when put in such a fashion. Now, I’m not personally such a fan of Fluttershy, but damn does she have a big following; I suppose I just think we could all post comments in a way that makes people feel more comfortable, if we care to try.

^ True dat.

@Pinkie  
who was trolling I was commenting, her greatest fear in this picture is her own uselessness and I was commenting on that (albeit in a possibly blunt manner to an imaginary character)
 
you really need to be less quick to call someone a troll merely for having fun at nobodies expense

I would hate looking in that door.

I have a fear too!
 
I still dont know what it is!

Cotton…? Shy…?  
Really?  
That’s your comment? Sheer trolling, with nothing constructive or thoughtful?  
Come on. I know us Bronies get a bad rap for being ignorant and rude, but there’s no need to perpetrate said notions.  
Besides, this is a cool picture; everyone has their own fears, and this is Fluttershy’s.

Maybe if they weren’t such pussies, they’d live.

You know.. sadly but a little heartwarming, I bet all of their greatest fears would be about failing someone they care about
 
AJ = Her family & Friends  
Rarity & Rainbow Dash = Themselves (By losing their dreams and their friends)  
Fluttershy & Pinkie Pie = Every pony

^ True dat.

if only you weren’t so useless Fluttershy they would have had a chance :D

So… what’s AJ, Dash and Rarity’s’ fears?

king sombra wins
 
Flawless victory