What profession is better with learning a little programming?

First, graphic designers.

In my experience, if pure designers learn Javascript and a little programming fundamentals the world belongs to them.

Secondly, marketers.

If people doing marketing know a little programming and the principles of how the internet works, then, again, they can do a lot more. They can access the raw data and slice and dice it in different ways to get new insights not possible from just the standard screens of analytics.