@Favourite pony justification
Personally, I favour Fluttershy. And no, it’s not just because she’s adorable, though that does help.
See, she’s like me to a downright scary level. Doesn’t like dealing with other people? Aye, that be me. Likes animals, even the ones most people don’t? Yup, though I don’t get to interact with them much. Tries to be as kind and considerate as possible? Uh-huh, but I’m quite a bit more blunt. Will turn nasty when pressed? You betcha. Projects an image of someone plain, simple and uninteresting, but every once in a while hints at unexplored depths? Indubitably. She’s something of a soulmate to me.
I don’t really get why people keep insinuating she’s got no personality. What, you’re expecting the least sociable pony of the bunch to openly strut all her stuff? She’s not the most vocal, but as they say, still waters run deep. For a reclusive animal caretaker, she’s sure got an awfully diverse skillset, what with extensive knowledge of sewing, massage techniques and even music, no? And she’s certainly not quite as straightforward as it seems. Oh sure, she’s little miss goody-four-hooves most of the time, but try pushing her friends around and you won’t be walking away from her in one piece. And gods help you should you refuse her kindness.
And even with all that, what’s wrong with a sweet, graceful and loving personality? We’ve got plenty of assholes, dickheads and cunts in the world so I’d say it’s refreshing to see a truly empathic, altruistic character. She loves all things unquestioningly, even as they frighten her and do her harm. That takes great strength of character and a heart to match.