Do you care much about special features (bonus features) on Blu-ray?

[4K2K]

Do you like/want special features (bonus features) on Blu-ray (making of documentaries, commentaries, and other stuff)?

Edit: This poll isn't about whether you want Profile 2.0-only bonus features, but is about whether you like/want special features like 'making of' documentaries, commentaries, and other special features on Blu-ray (features that will usually be playable all types of player).