Like Majic says it gives a different flavor. Take all the exotic scales

http://www.guitartricks.com/tutorial.php?input=40
http://www.guitartricks.com/tutorial.php?input=45
http://www.guitartricks.com/tutorial.php?input=41

They have a very unique sound. This sound come from the different Intervals used.

That's the cool thing about all those scales. Some you may like, some you may not :)