Yes. Of course using https everywhere is best. But sometimes that's not an option. In those cases, I'd like to make an informed decision. Is there any information about their prevalence? Or would that all be hidden anyway so no one knows? Does it depend on the site visited?
To be clear: I'm not referring to an attack on my wifi connection. Nor any other kind of attack. I'm asking specifically about connecting to a major ISP (let's assume U.S.) and visiting a site or connecting to my hosted web site. I'm also not asking about the government being the mitm, just anybody else.