That's outdated thinking. Look around at the efforts in past ~year for getting SSL everywhere. Non-SSL sites already suffer Google PageRanking[1] (maybe you want Google visibility for your blog or cat-sharing site), other consequences are not far off.

[1] HTTPS as a ranking signal: https://webmasters.googleblog.com/2014/08/https-as-ranking-s...

Well, TLS (allong with access controls) for his sing-along blog would have really helped Dr. Horrible stay ahead of the authorities.

In all seriousness, though, there are plenty of blogs where which page a user visits might, for instance, out a gay teen via gateway logs, hint about a private health issue, etc.