FWIW, I'd personally be happier (at least for an app that was sufficiently stable that I didn't find myself having to start it many times a day) with an eight minute load time than a thirty second load time: the former makes it quite clear to me that I shouldn't sit around waiting for it (which means I will definitely do something else, and come back sufficiently later that it will be over) while the latter will almost certainly see me sitting there staring at the app, frustrated, waiting out the thirty seconds.