In the last year, I learned about the "hamburger" menu. I was surprised to find that it ancient. Like it predates the internet, it predates my my computing experience.
And I like the original conception more than the current (mobile oriented) conception.
Here's some of Apple's thoughts on the tab bar, that help explain:
Avoid having too many tabs. Each additional tab reduces the tappable area for selecting a tab and increases the complexity of your app, making it harder to locate information. Although a More tab can display extra tabs, this requires additional taps and is a poor use of space. Include essential tabs only, and use the minimum tabs necessary for your information hierarchy. Too few tabs can be a problem too, as it can make your interface appear disconnected. In general, use between three and five tabs on iPhone. A few more are acceptable on iPad.
In some ways, I think of the hamburger menu as the "More" item of mobile UI.