It's a great show, but did you actually think that the prior seasons were somehow fast?
Or do you want a fucking soap opera where there's 5 minutes of action and the rest is a bunch of bubbling, bumbling, whining, and ridiculously stupid decision-making that makes you shout at your tv and constantly ask yourself why you still watch the fucking show? The Walking Dead.
Yep, it's a trade-off. Do you want instant gratification but a plot you can take or leave? Spartacus. Do you want a deep story with almost as much tits and gore but that can be just as frustrating as it is compelling? Game of Thrones.
its also expensive to make so it needs to stay popular and worth the $ to produce