They are not needed... they will attack you and ruin the world.
I have no idea why
Yes
not that is made yet
Drink a bucket of milk
No. I tried it yesterday on the 360 and I duplicated my diamond picks!
Press Q. This will drop what you are holding. If you want to get rid of it permanently, drop it in lava.
click q
You just re-download Minecraft, force update it, or update it if it gives you the option.
They can't. The only way to get rid of EVERYTHING that pollutes the Earth , they would have to get rid of all of the humans. We exist, therefore we pollute.
You have to use a skin
humans do not get ear mites only animals do.
Delete the .minecraft folder in your AppData folder and delete any shortcuts you have placed (on your desktop, in any other folders that you keep games).