I don't question that it looks "better" perceivably. But is it really worth the trouble? How many hours per week does one spend staring at movies on a 15" screen? Most folks use computers for work and other activities... and when they want to watch a flick, they head to the living room. Anyone so fanatical about BD can simply buy external players (or burners) and get their nerdgasms that way.
Worth the trouble?
Computers in general are used to lessen the trouble.
Once again there's nothing wrong with 15" screen if it's at right distance.
If you go to the trip, do you want to have separate device for each function?
Would you carry your bookshelf, typewriter, turntable, radio, television & darkroom with you?
Fundamental idea of a laptop is that you can do all with one device.
If I would like to watch a movie with my laptop once a week and it's not possible, I'll miss 50 movies a year.
For example, 5 persons in a family. Should they all have separate computer & bd-player in each room? Or pay for digital download for every person & device separately? Pay 20 times more than one bd, that everybody can watch with every device when they want to and as meny times as they want to.
I'm not fixated in certain media type. I'm interested in content.
If I could get a hard copy with bd quality and unlimited watching time, place & devices with resale value, I don't mind what the media is. Unfortunately, there's no alternative to bd.
(Like there's no alternative for Macs, if you don't want windows...)