Count me as another. I find syntax highlighting to be distracting unless it is done with some restraint (which it rarely is), and not helpful enough for me to bother with coming up with my own scheme or searching for one that I like.

I am sure there are corner-cases where I would want to enable it, such as were someone has been in the habit of commenting-out parts of a line.

I don't know anyone who uses syntax highlighting for natural-language prose, though I suppose there are some who do.