if you are building something small, like a two or so week project, then sure... skipping tests would allow you to get to the MVP faster. the problem is that w

if you are building something small, like a two or so week project, then sure... skipping tests would allow you to get to the MVP faster. the problem is that when you get to the 5th week you are really going to wish you had tests in place. making quick changes and then being able to run them against a test suite to ensure that everything is working correctly is valuable. this value goes up (in a non linear terms) as you add more and more code into the project. to answer your question: at first writing no tests is faster, later on it becomes much slower. it is probably never better.