BR will come to the MBP's at some point
First off, compared to a dvd drive, it's not going to use up any additional battery life at all.
Spinning a disc AND decoding it at the same time using the 5 watt integrated graphics card that is already fully capable of doing that is not going to drain the battery life any relevent amount more than decoding a dvd already does.....pretty sure I'll be pissed off at all the people watching two full blu ray movies on the plane on one battery charge while I'm sitting there twiddling my thumbs.
You don't seem to be able to grasp that downloading a compressed 720p version for your lappy is going to force you to buy the same movies you already own all over again, and going to be strictly inferior to a 1080p blu ray video anyways..and because you aren't going to be more than 2 feet away from your laptop when watching it, it will make a noticable difference on a laptop screen and a huge amount of difference when compared to a dvd video as illustrated here even on something as small as a six inch screen...
http://www.zonadvd.com/modules.php?name=Sections&op=viewarticle&artid=804
As I said in your other post, I am pissing in the wind to even think that Apple will never adopt a standard that many of it's high end consumers have already adopted.
/Get off my lawn, I'm still bitter about no one listening to me a decade ago that we should all stick with videotapes, and audiotapes rather than switching to dvds and cds but haven't learned my lesson yet.
PS Yes, I know that it won't effect the cost or functionality of my MBP at all since I can still opt for the cheaper dvd only super drive but I'm still going to oppose blu ray anyways just for the hell of it..