You can have your barely readable display if you want, but other people want to be able to check their messages or read an article/book on their phone while exposed to sunlight. What's bad about that? Doesn't seem to me like staying inside and staring at your phone would be better.
I have the same feeling, and I know I should wean myself, but current displays are practically unusable in bright light. And when trying to take photos or read a book, it’d be nice to have options...