As long as I have fun and get a good bit of lore and story out of it. Plus, if I get a chance to raid this patch I will be even happier. I am looking forward to it but at the same time, I am dreading it because I am unsure of how it will go. What if it is not enough content to keep us having fun and what if it turns out to be a frustrating grind?
This is my personal view. I just feel 15 minutes, when you could be watching TV, sitting in a city, waiting for raid to start, queuing up for a dungeon, or anything else that isn't actually valuable to your time, isn't much. It's not even a dent in your schedule nor day; if you're waiting to do something, too, why not do it at the same time as well?
Two birds with one stone logic.