When you are by yourself, they are great for when you add code. For instance, you start out with a test that passes, then add a ton of stuff. The test will tell you what you might have broken along the way. For huge, complex apps, tests are good to run often to keep you on the right path.

See being a developer, you should really have keen knowledge of programming languages like java, ruby, rails, php etc. It is highly appreciable on your part when you are able to verify the code for successful operation too.

Poonam Dogra
http://www.acsius.com/

Testing will become easier once you are more experienced with Ruby and the Rails framework.  Then you won't be second guessing yourself on if you're calling test methods appropriately.

Testing also becomes your friend more when other people are depending on your code.  When its just you on a small project it can be harder to see the benefits, but say you're developing an API or an application that other applications and devices interact with, it is critical to ensure you don't break compatibility to the other people.  So tests are a great way to do that.

I don't like writing tests either, but it's nice to be able to refactor code and easily see if you've broken anything.