Original Blu-rays = Endless warnings, trailers, DRMs, and I'm paying to see the Disk only in Windows PCs, (Oh, and I have to buy the software player to decrypt the disk) or in Blu-Ray players.
Piracy= See it where you want (Linux PCs, tablets, mobile phones,etc) without any kind of Nags.
And come on, I bought a DVD and I have to be remindered that piracy is a crime? I Bought it to see it not to pirate. If I wanted to pirate it, I download it, instead for paying for it.
Just like DRMS on Pc Games you have less problems running a pirated game than a original one.
It's hard to be a honest guy.