In bigger picture, this is a natural move from quantity to quality. The free content on internet feel like eating garbage. I follow a few really good newsletters (e.g Craig Mod's) and every episode feels like a chapter in a good book.

What I don't enjoy about newsletters is the e-mail clients themselves. They're bulky, filled with features I never use. I wish there was a way to hook my newsletters subscriptions up with Kindle. I can customize the fonts, sizes, spacing for my best reading experience, and the writer can forget about styling and just can focus on the writing.

Which makes me fantasize myself creating a subscription based reading platform with its own device :)