My project is complicated
It won't be too complicated for you anymore when you have a systematic way to approach it. Designed experiments give you that systematic approach. Complications come from many factors and factors that interact with each other. You may also have many responses, some of which may have competing goals. You can handle all of this in a very straight forward manner using our design of experiments approach. You will be able to determine the best factor levels to meet all of your goals simultaneously. You can do this with ten factors as easily as you can with two factors.
I need a better way to do my work
Stop relying on luck. Most engineers and scientists don't even realize how much they rely on luck to get their work done until their luck goes bad. Then they just don't seem to be able to find a solution no matter what they do. Design of Experiments eliminates the need for luck in your work, making it a better way to produce solutions that meet your goals. Because you are following an objective plan, you will be more efficient and find better answers.
I want to be the best at what I do
If you want to be the best at what you do, you need to know the best techniques for what you do. You also must know your field better than anyone else. My guess is that you've already studied your field and you've put tremendous effort into knowing it better than anybody else. But, because it's not commonly taught, you haven't learned the best techniques for applying all of your knowledge. Design of Experiments gives you the best way to apply your knowledge. Why is it best? It doesn't rely on luck. Using it, you only run experiments that have value for you. You don't run experiments that are simply a waste of time. So, by applying design of experiments with your superior knowledge of your subject matter, you can truly be the best at what you do.
I'm up against a deadline
You need the most efficient route to your answers. Using designed experiments, you get the maximum amount of information from the minimum amount of work. When experimenters use design of experiments to plan their work they find their answers, in typical experimental situations, in 1/5 of the time compared to the One-Factor-At-A-Time approach. The One-Factor-At-A-Time approach is too time-consuming for industrial projects. This old method also may not find results at all unless you are lucky. The bottom line is, by using design of experiments, you will spend less time in the lab and you will be much more likely to be able to meet your deadline.