Really people are just too retarded.I subscribe to unwanted's post, they say they quit wow before cata, 3 months after cata, 6 months and they don't care but they read and post about wow.
The fact is that people do not realize how much people changed this last 7 years, since wow released.
In the beginning people were so damn happy to play content everything was new,it was great just to play in dungeons like upper spire or in Stratholme.Now they got bored when they see dungeons like deadmines HC or shadowfang HC, even though the content is CHALLENGING,you had in start of cataclysm to cc every group of monsters and know tactics in every 5-man dungeon boss.
Really now , in what expansion did you need to know tacts at every single boss in a 5- man dungeon and cc every group of 4-5 monsters?
In my opinion Cataclysm is a bigggg fuc%#ng improvement over vanilla wow or any other previous expansion.
People don't realize that because they changed.In vanilla bosses in raids were hard because there weren't any sites to read tactics or abilities on it.Pvp was hard cause there weren't elitejersk or arenajunkies , so people had chosen their talents by copying other people and not really understanding at start why they do what they did.
The reallity is that the first game and first expansion, lack so many things and don't have so many features that you may pull your hair off, when you try ro re-play them.Also you notice it takes so much time, running , crafting to do every little thing that is ANNOYING like hell.
The pve part of vanilla and bc is very easy for most of elite raiders that have at least 4/8 HC on ds now in 4.3.Actually it is so easy that is pathetic.The annoying part is the grind one and if people fail on those raids, it is because of lack of dps, which actually is annoying, when you know you do everything right but you fail because you need to spend 1-2 months on grinding just to beat illidan.
The pvp part of vanilla and bc, well this is the fun part.Most people who have a team over at least 1800 rating in 4.3 will find that those arena and bg games in vanilla and bc are very very very unbalanced.
The fact is that theorycrafting and using spells,cd ,rotation,cc has evolved so much that vanilla and bc may seem impossible to play in arena, even in 3v3, where some comps seem GODLIKE, and having specific comps in bg is a 95% win.
I have nothing more to say, just play vanilla and BC on a private server, and if you still like it that is probably because you are nostalgic over those times, but look into your heart and you will see how under refined and under development those games were.