Finally Understanding the Merits of TDD

I'm not a TDD person...or at least I wasn't until last week. Up until then, I had read the blogs and looked at the examples to try to understand TDD and unit testing (with mocking) in general. Almost all of the examples I was shown demonstrated very basic scenarios that, in most cases, were too trivial to show value. I would ask people who would speak about unit testing in general how you'd do a specific scenario and would get mix responses ranging from "just try it" to "you should be using this tool and it'll just write the tests for you".