One of the greatest features of Cypress is how awesome the experience of debugging tests is. You do have to get used to the asynchronous nature of E2E testing, but once you get the hang of that debugging is pretty straightforward, and the ability to debug your own source code is awesome. The fact that your test and source code are executed in the same context also gives you some powerful advantages as well. You can potentially even expose some internal state to your Cypress app.