I download movies in both 1080p and 720p, which unless you have amazing vision, or an amazing tv set, you wont see a huge difference in anyway, in about 3 hours. I have a 7.5mbits per second connection and it does not dip below 5mbits. Yea, it may take a couple hours to download the movie, but the quality is good, and I can play it on numerous devices. I do own blu rays, but thats what my LED tv and PS3 are for, not my laptop. Granted it would be a convenience to be able to watch blu ray on my mac, it is NOT a necessity. Blu rays are meant to be seen on a 1080p Large Screen television in my opinion anyway. Not some 13, 15, or 17 inch laptop screen, one of which is only full 1080p. If you base your decision solely on the inclusion of blu ray than you need to rethink what you want a computer for. Optical media will die in the years to come, and digital downloads will be the way to go. In the mean time blu ray is not a feasible option in a mac. If apple wants to add it as an option thatd be great, this way the people who needed it/ wanted it, could have it, but for the majority of us, I think it will make no difference
A few days ago, there was a story on the front page of macrumors quoting Jobs saying that Blu ray will not be in a mac in 2010. So give it a rest.