What is the need of English conversation?

Having a conversation is another way of saying "talking with someone".

If you want to be able to talk with someone in the English language, then you'll need to be able to do " English conversation".

These days, it might just as well be emailing, texting or tweeting someone though. Although "conversation" implies a more conservative use of Words, spelling and sentence structures.

If you don't think you'll ever need that, or if you're OK with being quite poor at it, then you don't need "english conversation".