I promise it's worth your time. Being honest, I fell in love with the score before I even knew it was Zimmer's, and once I found out, my first thought was "of course."
To each their own, but if you want an idea of what went into the score, that video above is insightful.
For me it had been better to pick less well-used actors than Jason Momoa, Josh Brolin, Javier Bardem etc. Just robbed it of some of the mystique I think.
Unless you're a studio onto yourself, there's no way you can get $150M+ of funding for movie with only no-names as leads.
But I get what you're saying. Sad, because it really detracted from the movie for me.
We either get low-budget stuff (10-20 million), mostly horror. Or movies that are huge gigantic blockbusters that MUST succeed.
The mid-price stuff is gone. The ones that have enough budget to make a director's vision come true, but not so much that it brings in people from The Company suggesting their pet things to be added.