Tabs, or No Tabs? I did the same as this commentor 2 years ago. I can code so quick now because of this simple switch. Here's why:

(source, Laracasts.com)

Ben Smith
"I think the most beneficial tip was to do away with tabs. Although it took a while to get used to and on many occasions in the first few days I almost switched them back on, it has done wonders for my workflow.

I find it keeps my brain more engaged with the task at hand due to keeping the editor (and my mind) clutter free. Before when I had to refer to a class, I would have opened it in a new tab and then I might have left it open to make it easier to get to again. This would quickly result in a bar full of tabs and navigation around the editor would become slow and my brain would get bogged down keeping track of what was open and which tab it was in. With the removal of the tab bar I'm now able to keep only the key information in my mind and with the ability to quickly switch between recently opened files, I find I haven't lost any of the speed which I initially thought I might.

In fact this is something I have noticed in all areas of writing code, the more proficient I have become with an editor the better the code I have been writing. Any time spent actually writing your code is time in which your brain is disconnected from the problem you are trying to solve. The quicker you are able to implement your ideas in code, the smaller the disconnect becomes. For example, I have recently been learning how to do unit testing and to do so I have been rewriting an old project with tests included. The ability to so quickly refactor has meant that whereas before I might have taken 30 seconds shuffling code around, now I can spend maybe 5 seconds allowing my mind to focus much better on how best to refactor, not on the actual process of doing so."

jeff_way Mod
"Yeah - it takes a little while to get used to the idea of having no tabs. But, I wouldn't go back at this point. It's all about forcing yourself into a faster workflow. If you keep the tabs and the sidebar open, you won't use the keyboard."