I don't like the idea because I think we should take care of our cultures and languages are part of the culture as well. It doesn't exist just English.

I would not like it. I think that the beauty of this World is in difference.If there would be one language it will not be interesting.Language is one of the symbols of one culture.

Might it will be easier for communication but it will not be interesting at all.

everybody can change their language but they cant change cultural heritages. so, i think even languag mother languages are a big part of cultur. 

Read "Atlas Shrugged" by Ayn Rand if you can get hole of it.

    Sounds interesting, but it means many people will lose their jobs. It will be worse that many military confidence could be cracked.although it's easy to communicate, but you will lose something. I want the world full of color.