WW is the most underrated version of Animal Crossing. Everyone compares it to NL and since NL is newer, makes WW look bad. Well of course the graphics will look different, it's a Nintendo 2DS game and the 2DS never had good graphics. The graphics won't be breathtaking but after playing WW for a while you won't notice the difference.
Animal Crossing: New Leaf doesn't simply exist for being the latest Animal Crossing game ever released. It brought changes and additions that the franchise is usually known for, but this particular game executes them in a more meaningful way than usual. Finally, being a mayor means much more here, as you can place Public Work Projects wherever you'd like to and even set a town's ordinance that will suit for your playstyle. You couldn't do that before, at least in the English Animal Crossing games.
Don't get me wrong! Animal Crossing: Wild World is a great game during the past decade. The thing is, each game of the franchise is always improving upon what the previous installment contributed while the overall gameplay stays the same and never change the core gameplay too much. And that's before mentioning Nintendo Wi-Fi Connection is currently shutdown since May 20th 2014. Therefore, AC:WW is rendered obsolete because the time has passed. Newer people who never got to play it will most likely have a harder time enjoying the game because it didn't aged well, not just because of its more primitive graphics. The same logic can be said for any other Animal Crossing title released prior to AC:NL. Even the latter will likely fall into that inevitable fate of being outdated as soon as the next installment gets released.
When you say 2DS, I'll assume that you meant DS instead. It's the handheld that AC:WW was made for. A quick look on the game's copyright year will tell you that it was available since 2005, way before 3DS/2DS was released. For the matter of fact, 2DS is a 3DS model without the 3D feature and is focused on being more affordable than the standard 3DS model. Every system from the wonderful DS line can play AC:WW without any hitch.
It may not have Halloween or Chirstmas or Easter and everything else, but hey, CF never had that either but everyone seemed to love it anyway.
Actually, Animal Crossing: City Folk
have these holidays, and more. The Wii iteration did add some enhancements and brought back some of them along the way, but they only make it just slightly better than AC:WW without being able to carry it anywhere. As a result, the general consensus involves on how that AC:CF is a carbon copy of its predecessors and the fact that the Wii was a poor fit for the type of the game. AC:WW didn't ran into these issues despite being on a less capable system, which should explains why the game was more positively received between among professional reviewers and players.
If you want wind down for the day, WW will give you that. If you want to play a game with no goal, WW will be there for you.
That also applies for any Animal Crossing title in the entire franchise. AC:NL has more interesting reasons to be compelled coming back for more than its predecessors. That's a big reason why they're getting it over AC:WW in the long run. Although the latter can be played on any 3DS model, it's still not as easy to find on the wild than its 3DS counterpart. That can be purchased via retail stores or download it from eShop. Easy. How do we get the DS installment, now that we can't find these copies on major retail stores anymore? Assuming that we don't already own it, we'll have to either scramble to the used stores or use Amazon/eBay/etc., and hope to find one that is affordable enough. An average gamer wouldn't even bother thinking about it.
We should all thank WW for making us the Animal Crossing lovers we are now. What game did we love as kids? What game began the Nintendo AC legacy?
AC:WW did brought some interesting features that are kept for the future installments. Special mention goes to online play, which obviously became a staple of the series. However, the credit of starting the legacy in English territories goes to Animal Crossing on GameCube. Since September 2002, it's the first title that saw a release outside of Japan and saw a great success back then. The game is a port of Animal Forest +, which was released back in December 14th 2001. It's based on Animal Forest from N64, which was launched 8 months earlier.