From a regular user standpoint pretty much all modern browsers throw up warnings and block the page from initially loading if it’s not https, which discourages people from viewing it.

WinDirStat works but is super slow though. WizTree is a much better modern equivalent.

Not just normies. I liked using thunderbird but it felt so bloated for my use case (not to mention the sluggishness) . I just want to read my email, I don’t need an entire suite of things like calendars or extensions (I understand why people use them, I just do not need or want them). Mailspring was by far the best option for me.