Fading Highlighter Fades Away After One Semester: Yay or Nay?

I’m not boasting, but most of my college textbooks look pristine. That means that you won’t find any highlights, notes, or markings on any of their pages. Not because I plan to resell them or anything (although I probably could, so I could make a few extra bucks), but because I think highlights look kind of messy.