Because Windows have ugly legacy fonts as default, arial, times new roman, 新細明體 to name a few.
Yeah, like I said, to have it work on a website that selects a font, people would have disable the function to let websites choose its own fonts. On highly stylized websites, it isn’t desirable. Many stylized sites, even online news outlets, would use serif to signal a paragraph is a quote from text below or use it in other manners.
In the polling thread, 79% of forumosans prefers sans.
If having most formosans manually set their default serif font to sans is not a big deal, how would the site changing it’s default to serif be more of a benefit to you? Doesn’t that really mean now the majority of the formosans have to live without the ability to choose their own fonts?