I especially enjoy being able to write "unit tests". Since I tend to mess up my SQL, or some code change might taint the data in a way I can potentially expect

I especially enjoy being able to write "unit tests". Since I tend to mess up my SQL, or some code change might taint the data in a way I can potentially expect (null values, for example), I can add some pretty high level checks like: "the sum of all order line items should match the sum of the prices of all line item products" which are built out of two separate data sources, and make sure my analytics stay in range. All checked into git. I do agree that the iterative workflow could be a bit smoother, and the doc side of things is a bit rough. I expected the project to gain a higher velocity than it seems to have right now.