Agreed - I won't buy one until they add a blu-ray drive.
Modern Blu-Ray titles are stamped out using the cheapest methods available anyway, there's no experience when using their product. It's a disc in a case with some cover art work. Very thrifty, cheapening the product considerably.
This is nothing like the old Criterion-style treatment with a nice box, some accompanying materials, and a sense of owning a piece of something important.
The future is downloads, Bittorrent or iTunes store or otherwise. It's the only method that will scale to the future. When Red is making a 28K camera, when Apple produces screens with 300+ DPI, you know Blu-Ray is only a stop-gap.
Bandwidth would be a big problem. But storage is an even bigger problem. And if you trade away storage requirements for higher bandwidth consumption, you have even more bandwidth problems and people are going to be pissed they can't watch their movie on the plane.
Now, you could argue that there's no perceptual difference between X kbps and Y Mbps, but I have seen articles that differ with you on that if that's the position you choose to take. Is there possibly some happy middle ground in there somewhere? For sure. I don't think removable media is going away soon though.