Why do some websites eternally not let you back to the previous page when clicking the back button?
The link goes to the HTTP version of blogspot. This redirects you to HTTPS. If you click "back" you are back at the HTTP version, which will redirect you again.
Yeah, browsers could be smarter about this.
I'm not sure they could. If the http:// URL would have responded with a redirect to https://, the back button would have worked just fine. Instead it responds with a perfectly normal page that then does this:
if (location.protocol == 'http:') location.protocol = 'https:';