building it isnt the problem. i have both a standalone (well, ps3) and a htpc thats capable of bluray playback...and a laptop, and none of them are as simple as a standalone. i'm not denying its easy to build one, and relatively easy to set one up (if time consuming) but a lot of people dont want that, they want something that will play a disc and compared to putting a disc in my ps3, having it turn on automatically and play the disc automatically, there's nothing as quick or as simple that matches it imo.
well thats fine, its your opinion. but the OP is asking about HTPC that arent PS3..