I liked the idea of pinned tabs because I was thinking of them as being a way of having multiple "homepages", i.e. when I open my browser, they open automatically. However, they're stored in session data, which means that pinned tabs get lost whenever I close my browser because I have Firefox set up to clear a bunch of different session/history data on close. I'm not sure which setting is causing this, but I'd like a way to have a page open on startup without having to compromise my privacy, so I'd prefer to just pin tabs on startup somehow without having it be related to session history. Is there any way to do this?