Offtopic semi-ignorant question: As a non-designer, can someone explain to me why I'd ever need more than a single serif font, a single sans-serif font, a single monospace font (and ok, a single "fun" font)? Why should I care about the differences between Times New Roman and Garamond, or between Arial and Verdana? Even when I look closely I struggle to see the differences within categories, so I find it hard to believe that my document or logo or whatever will be perceived differently by a reader because it uses the wrong font within the correct category.