You might think most sites are innocuous, but it depends on where you live. I could see this site getting classified as "hacking/encryption-related" by something like sonicwall's firewall (HN too). What if your government tasks your ISP to round up all those trying to bypass state firewalls? Heck I live in a western country where our government is misguidedly angling to ban encryption. For the minimal effort involved, I believe all sites should be https.

Privacy is beneficial in itself, but also: > protecting less sensitive sites strengthens the protections of more sensitive sites

Any site that can be MITMed is a site that can be used to gather personal information and escalate from there. Especially seeing as most people reuse passwords like crazy.