y bother with those silly articles written by people who prolly have every single piece of equipment they need. statistics prove more than anything. go see all the photo gallery and see wat equipment people are using. macro and close-up gallery is full of users with their macro lens. world of nature forum is full of users with their big prime lens. look at reportage and sports, 70-200 f/2.8 everywhere.
like wat student said, go shoot macro with a 50mm prime lens. to me equipment counts as much as skill.