I don't do TDD. Tests help me write code. I write the code, iterate on it, then write tests to confirm the assumption I made in the code. The act of writing the

I don't do TDD. Tests help me write code. I write the code, iterate on it, then write tests to confirm the assumption I made in the code. The act of writing then uncovers misunderstandings I had, careless bugs etc. When the tests are complete, they protect my code from someone else changing the code such that the things I wanted the code to do no longer happen. Is every test I've ever written useful? No, absolutely not. But I don't have time/am not best placed to determine which would be useful at the point of writing, so I write them all.