I've tried looking this up and never find a solid answer. Seems to be down to preference, but I'm thinking there has to have been some study around fonts and reading speed or reading comprehension, something that would help me pick a font?
I have no sources but I also read that some fonts are easier for people of certain regions (ex: people from Antarctica enjoy reading Arial font). Should I just end my search and try to enjoy my ebooks?
I find it hard on my eyes, but I think it's great that it exists for people to choose, especially for those who actually get a benefit from it. The best thing is to let people choose their own fonts everywhere. Yes, it might clash with some corporate profile, but fuck'em.