Please, let me write tech docs in plain text
...and dont' force me into using word processors

One of mankinds most complex invention has been - and will be - described in plain text format: The Internet. If plain text is good enough for HTTP, it should be good enough for your next project's technical documentation.

As a software developer I deal with plain text (source code) all day long. I'm used to it and I like it. So why not use it for technical writing, too?
In my experience plain text can give you a pretty large number of advantages over word processors:

To be fair, plain text comes with drawbacks, too:

To summarize, I think it depends on what tool gets the job done: Plain text has its advantages, and for technical writing I tend to favour it over word processors. But for communicating with non-technical people I think WYSIWIG is better suited.