Swing by UX.SE for lots of discussion on this topic.
Feature discovery is good
The hamburger icon itself isn't the problem, it's people's tendency to scan quickly and rely on the design to expose important things. If you hide content behind a menu button, users will skip over it until they are looking for something that might be hidden in a menu.
Put yourself in the user's shoes
Take a look at these two top nav solutions. Which version is going to drive discovery of the four most important things (whatever they may be)? Forgive the irritating colors ... I was having fun
Hamburger with fries
Notice that the 'burger didn't disappear in the expanded version. There's probably still more things in your site structure. Things like "pictures of car bumpers", "8th grade art projects", "my other businesses". Stuff that you don't need people to discover when casually browsing or landing in the middle of your site from a search link.