That's indeed a terrible user experience, and the fact that the alternative isn't used (apps saving state even in trivial cases like which paragraph you're read

That's indeed a terrible user experience, and the fact that the alternative isn't used (apps saving state even in trivial cases like which paragraph you're reading or a search query) adds to it. Wasting battery seems easier, so I'd also prefer to be able to configure to allow it rather than have all the apps killed and lose state, after all, it's my battery to waste