How is backup utility useful? Is it necessary to take backup of data?

Question :

How is backup utility useful? Is it necessary to take backup of data?

Backup is a very helpful utility. You can backup your data with that and whenever your data is corrupted by any virus or Trojans your data will remain safe.

It is not necessary to backup your until or unless you have something really important stuff in your machine.The backup depends on your wish if you want to make backup, go on for it and if you don't leave it. But if you have something very useful for you in future then its better to take backup.