Other than eavesdrop, the biggest advantage of HTTPS for me is to stop nasty ISP that injecting advertisement or other code in HTTP page.
Personally I pay more so that I have support via IRC, have an unfiltered view of the internet, have static IPs, no over subscribing bandwidth. not everyone cares about that so are happy to pay less to get less
Why is there so little choice in your area?
Huh? This was/is a thing? I've never seen that from a home ISP I think, only early on in airport's public WiFi and such. But a home ISP injecting ads into webpages? What country was/is this in?
https://security.stackexchange.com/questions/70970/my-isp-is...
https://security.stackexchange.com/questions/157828/my-isp-b...