Most articles and books are written in the conventional fonts like Computer Modern Roman, Times New Roman, etc. which are similar to each others. Why aren't more fonts used?
I wrote my course this year in a cursive font and it didn't cause any problem to any students. I'm afraid however that if I do the same in an article, the article will be ignored. Would you take an article written in such a font seriously? Would you even read it?
A sample of unconventional fonts: