Ever read Fantasy?
Ever noticed how you're always forced to see how the obvious few good guys (elves, men, dwarfs, etc.) struggle against the mighty oppression of the vast number of obvious bad guys (orcs, goblins, etc.)? "The Evil" usually have no reason behind burning villages and killing the weak and innocent other than just being bad.
And that's usually because we never receive any context or see anything through the enemies eyes and everything is just so predictable.
Game of thrones is, compared to other Fantasy, just so well written.
No side is ever bad, they just have different interests. Characters are flawed and bad decision here and there suddenly take effect down the road. People die even after doing the right thing and because all of them are so fleshed out, it's kinda painful to see them disappear and have all there plans and hopes be for naught.
A chapter usually ends with a cliffhanger and takes you somewhere else longing to get back, so you keep on reading and reading.
Watch the first season, it takes it's sweet time but once you're caught it doesn't let go. If your not into books that's fine, I personally find the series a great adaptation compared to most (it sometimes adds context with extra scenes, which were only hinted at in the books), but as we get deeper into the series I sometimes find it lacking in quality (because of the sheer amount of things happening).
And don't let the "Fantasy" stable put you off, magic and creatures exist, sure. But it usually has this fake feeling and stays secret from most of the world.
You should just try it yourself, watching an episode and getting bits of information doesn't really work for a show like this, as it's always building up to something.
A must read, but be warned George R.R. Martin is a genius so after reading Game of Thrones you might find other books to suddenly be lacking quality.