"Why" does not always imply intention. It may simply be a way of asking about causes, which science does all the time. Furthermore, to state point blank that science cannot address matters of "intention" is perhaps your opinion, but little more than that.
A bit arrogant and ignorant of you to try to tell me about my profession. But that's typical of ID and Creationists. What do you do for a living? I want to know so I can tell you how to it the way I think it should be done.