E`s Minecraft Opinions - Chapter 1 (or is it?)

Hey this is E, the oldest son of Jim. I am 11 years old and I like Minecraft Pocket Edition.  How many of you like Minecraft? Probably a hole bunch of you. And now Minecraft is even better since there are allot more things like the Endermen, Abandoned mine shaft, and Stronghold.  So now we got a hole bunch of new areas to the world like the Taiga, Forest, and Snow areas. And why don`t we have the Nether, the End, and Wither?
Because, I need more of a challenge on survival.  Why can`t they just give us enough space in the nether to find wither skeletons? I mean the nether reactor is fine but it just isn`t the nether and you don`t get to fight Blazes, Wither skeletons, and Ghasts. And the End they have an End portal but no End or Ender pearls. I mean they need to add the End and Nether.
And I want to fight the Ender Dragon. And they should add Mooshrooms and Cats. But there are some good things about 0.9.0 like Endermen and infinite space.

 What are your favorite and least favorite animals. I hate pigs and chickens and I like cows.