[crazygringo]

I suspect it has to do entirely with affordances.

Programming in text, you have to learn, in advance, what the commands are that you're allowed to type, and remember them. That's a heavy up-front investment.

Visual programming generally makes it much clearer exactly what your range of options are -- the goal is for the learning curve to be far easier.

[Too]

Good autocompletion with intuitively named standard library comes close to this. When coding c# in visual studio I very rarely have to look at documentation, you just guess what the class or function might be called and get the options presented for you.

[hasenj]

Could be an interesting feature for IDEs to start studying certain control structures, not just function calls and parameters.