I think about how fast our devices will be after having the right to remove all software bloat.
At least on iOS, apps aren't running all the time in the background, they largely only get to be able to do background operations through a very strict set of background processing APIs that Apple provides to developers. This leads to the idea that if apps aren't shown in your task switcher, they aren't running.
This is in stark contrast to Android in which background apps is like the wild west, anything and everything can run in the background and very often does. People talk about how Apple iOS devices have such little amounts of RAM yet when compared to that of Android devices, iOS even with such little amount of RAM, can still run circles around Android devices. This is what you can achieve when you marry the hardware with the software the way only Apple can.
Yeah, I know... I sound like an Apple fanboy. By the way, I'm typing this on a fully tricked out self-built desktop running Windows 10. Try to figure me out, boys. Besides my iPhone and my AppleTV, I have no other Apple devices in my home.