Re: In defence ..
>The double action required to free up memory
>(slide up until the apps show, then hold and wait
>for the red delete button to appear),
Don't do that. There's no point at all in hitting the red button on apps that aren't even running because they've been hibernated. It just costs more battery power to launch them from scratch next time. iOS is far better at memory management than you are.
Closing apps need only be done if you have something that's wedged, or needs terminating with extreme prejudice like the Facebook app.