Some can't understand why users leave the dock visible; I can't understand why anyone leaves it at the bottom! 😎
I always put the dock on the right side so I can see more lines in a word processing document, more rows in a spreadsheet, and more of the night sky towards the zenith. When I'm working on a manuscript, I hide the dock and turn the setting to Hide/Show on mouse over. Otherwise, it remains visible on the right, for one-click access to apps.
You can also shrink its size so it's less distracting, no matter where it is positioned.
I think most users just stick to the defaults. Many have little adventurous spirit or a latent fear of technology — they feel as if they'll break something if they rummage in the settings. Many on MR are quite the opposite — fiddling, tweaking, repositioning, and customizing to get the look we want. We're far more likely to go into settings, preferences, etc., hoping, and expecting, to find controls to change the look and behavior of whatever we're working in.