Most people will care about something not in ASCII.
Windows-1252 encoding was supported on American computers long before Unicode. I remember “smart quotes” being promoted as a feature of word processors.
Even for people who didn't care for the quotes:
• everyone appreciates ¢, ° for °F or 46° N, ¼, ½, ¾, × and ÷,
• people handling large texts want §, †, ‡ and maybe ¶,
Web browsers have made it more difficult for the average user to enter these characters, but software like Microsoft Word has supported easy ways to insert many of them automatically.
