Kinda funny... While I understand your point I feel the opposite. I hate it when people do not include a max-width because then I have to care about it. Yes, the Firefox reader view makes it quite easy, but I still prefer having a ready-to-read layout by default.

But you are right, in this case, it all comes down to personal preference.

True. But reading lines longer than 90 char is difficult. Probably multi-column text is the way to go.