@Moonatik
You’d be surprised how many people actually believe this kind of idiocy. Everyone basically assumes that nightmare Moon’s world is a complete Utopia.

You seem to be forgetting a small thing, Eternal Night. The fact of the matter is that eventually everything is going to either wither away and die and her subjects will starve if they don’t freeze to death first. Plus, we don’t have any reason to believe that the world is at peace considering the fact that we only see a small portion of it. We also don’t know for sure whether or not Rainbow Dash and Rarity willingly joined her or if they were forced into serving her.

Not to mention that judging by the expressions on her guards faces when Twilight mentioned Celestia, I wouldn’t be surprised if she browbeat anyone who so much as spoke of her in the past. I mean, RD herself looked downright terrified when Celestia’s name was mentioned. And as for Rarity, at this point I think it would be a simple “work for me or perish” sort of routine, in which Rarity would work under her simply to preserve herself and ensure her family’s survival.

There’s also little to no evidence of Nightmare being benevolent towards her subjects or anyone being happy with her being in charge either. Rarity certainly doesn’t seem very pleased with her position.

And I think we both know that nightmares both too arrogant and prideful to so much as consider letting the Sun rise.

Not to mention that even if you go by the logic that she was able to somehow use her magic to make Equestria adapt to a permanent night, Nightmare Moon has essentially doomed Equestria since raising the sun would probably kill off/weaken most of the population. Think about it, suppose Discord gets free and decides to “shed a little light” on Equestria for shits and giggles? And before you say she probably dealt with him, you need to remember that her timeline came in before Discord’s, so by this logic not only is Discord still out there, but in his own time when he successfully defeated her.

Then there’s the fact that the ecological system would suddenly go nuts and everything would start dying off, why? Because they haven’t adapted to the sun in years due to Nightmare forcing the world to adapt to a night only environment, an issue that they wouldn’t have to deal with if Nightmare hadn’t brought about Eternal Night and forced them to adapt to that said lifestyle.

Hell, it’s confirmed that unicorns were able to raise the sun themselves in the past before the sisters came along, who’s to say that other powerful entities such as the Storm King or Tirek (both of whom have powerful magic, or at the very least enough to rival the Royal Sisters) won’t simply raise the sun to weaken the inhabitants and then easily conquer them?

All it’ll take is someone with enough power to take control of the Sun and everyone would be at their Mercy. Nightmare may be powerful, but she’s still just one Mare, and she’s pretty much placed Equestria to a more vulnerable state.

And here’s a question: if everything was perfectly well under her rule then why did she want Twilight’s time travel spell? She never stated that she was going to destroy it, only that she was going to go back in time and make sure the elements are never found.

Why? If she perfectly content with her position, destroying it would be a better option.

It’s simple, because she’s selfish.

She KNOWS that there are those that will rise up against her tyranny, hence why she wants to snuff it out. And while you could argue that she’s taking precautions that any other ruler would take, you need to remember that she’s talking about getting rid of one of the few things that could one-shot any evil entity that came at them, that alone says a lot.

And as for the Villians, have you ever stopped to consider exactly how the hell she could have beaten them all? Considering the fact that shattering Discord’s statue is not an option since that would just free him again (and if it were that easy they would have done it a long time ago). She sure as hell doesn’t have the elements on her side since they disconnected themselves from her and Celestia after their fight. So it’s more than likely that he hasn’t feed himself yet but eventually will.

Plus knowing how prideful she is she would have boasted about having dealt with threats like Sombra, Discord, or the changelings, yet the most she proclaimed is that she rules Equestria and that she can deal with Timberwolves. The idea that she somehow beat all of the villians is too bold a statement for her.

I doubt Cadence would have had her wedding since she’d probably be locked away or on the run due to her connection to Celestia herself, so no Chrysalis wedding plot. And the Queen would probably be on the down low and would be perfectly fine with simply kidnapping innocent civilians for the Hive to drain since it’d be easier for them to abduct civilians in the shadows of the night, which is eternal.

Sombra would’ve kept his Empire safe, and it took both Celestia and Luna to deal with him, and that’s not even getting into the horrible blizzard surrounding said Empire that both of them couldn’t push back.

The only villians I can really see being defeated completely is Tirek and possibly the Storm King.

Nightmare is strong, but she isn’t that high on the power scale since the only way she was able to blindside Celestia was because she was holding back since she was fighting against her sister, this is more than likely why she was able to seal her away in her timeline. She still lost to the elements so it’s too big and assumption to say that she somehow beat someone who could only be defeated by said elements.

Once again, that’s just an assumption. But you can’t simply say that based on what we see from her timeline that she defeated everyone and everything is peaceful, especially enough without bringing up some actual logical insight on how that could have been accomplished. And considering everything I just said up above, think it’s safe to say that Nightmare’s rule isn’t as absolute and peaceful as everyone wants to think.

Celestia ain’t perfect, but there’s a reason Equestria is still around even after a thousand years.