I'm deciding on the Font Families to use in LyX for a planned novel. Computer Modern is the default (Roman, Sans and Typewriter). I'm interested in the number of font faces and the versatility in styling of text. The number one priority is the ease of reading lots of text, and it not appearing unusual or odd. I don't want something "unique" looking, but rather something that the reader would never think twice about...because they're too busy reading to notice an artistic font. I hear about everyone having a personal favorite and recommending this or that, but never have heard once, "stick with Computer Modern font families"
I can't find a reason to change the fonts from default. After looking over test prints, Computer Modern Roman seems excellent to my eye. I particularly like that there is a very noticeable and distinguishing contrast between regular and bold text. The italics is also noticeably different from a similarly curvy but more vertical font face that I think would be great to use with inset monologues and poetry sections, and there is a decent small caps face.
If someone were to recommend another font, I'd hope its as versatile and readable. I haven't looked at the Computer Modern Italics or Computer Modern Typewriter font families, and so I don't have an opinion on them yet.
MY QUESTION is simple: Did these font families become the default because they've withstood the test of time and no one has been able to argue that CM is inferior to another font family. Or, like so many other traditions, is it the default because it was the first, and no one ever bothered to change it to something that perhaps had the consensus of being an improvement.
And so, understanding that this isn't a discussion forum, but limited to question and answers, please let me know if the Computer Modern font families have ever been lambasted for having defects, or for having a general consensus of being "unreadable" for novel length works.