The Advantages of Drupal
It is easy to use & update

You can update your own site when you want - where you want - without fuss. No need to get your web designer to do it for you. Using a properly configured WYSIWYG editor like TinyMCE, you can even paste content from Word and have it take out all those tag peculiar to MS Word.
Value for money

Drupal is open source software, so you don't need to pay any licensing fees or development costs.
Reliable & Secure