If you have been working with CiviCRM for a while, you will have noticed that certain patterns occur regularly in your data - and thus have to be entered over and over again.
Consider this:
The prefix "Mr" corresponds to the gender "male", "Mrs" is usually "female" - you know that, but CiviCRM does not, so you have to make an additional entry
In languages other than English, you might have the additional hassle of choosing the gender-specific greetings