specific religions might die, be born, change, split, etc', but religion in general will probably never die.
i think folk religions are struggling due to globalization as they have being since the early colonization days, but one can only hope that at some point we'll go back to spreading as a species again (you know, for long-term survival & crap), and then the trend towards folk religions and splinter religions is likely to grow. before you know it there's a group of martian muslims that believe god brought abraham to mars to scalp the giant face, and that the stone of mecca is only a fragment of it.
then there's philosophical changes. right now monotheism is loosing philosophical grounds as a "needed explanation", i think a strong argument for monotheism and deities is the simulation probability principle, you know, the whole "if every universe can have an absurdly huge number of simulated universes within it, any given universe is more likely to be a simulated one then a real one". at the core of that argument there is a suggested designer, a divine server admin.. that might sound a bit off whack right now, but would it sound the same for generations growing up with functional VR (you know, better then WoW)? this in turn creates a metaphysical reality to speculate on, a "real reality" around us. you can even combine it with a belief of chosen people, and claim that while some of us are actual beings from the outside universe with "souls", most are merely zombies, simulated beings made to behave sentient. dangerous belief but its certainly one people might adopt.
God-centered religion needs to die but will live on like a virus :\
I think religion is dying only in certain parts of the world, and in other parts of the world it's staying the same or increasing. For example, I think Islam is growing. . .not believing or adhering to the religion or Sharia Law is punishable by law in some countries. In the USA, I think religion is starting to die since it seems there's a growing number of Atheists compared to a couple of generations ago. However, for the amount of religion that still exists here, I think it's more diverse in the sense of the number of religions that we have here now, including non-Christian faiths.
I think religion may be dying out in parts of Europe, but I'm not sure overall. I do think that culture influences this because in some countries the religion is still the law. I do think that my culture plays a role in reaching my conclusion because being in the USA, I'm free to explore and adopt any religious beliefs I want, or none at all. In some countries, such as some in the Middle-East, I would guess that they may not feel that religion is dying because it's still around them everywhere they look, even being able to hear the prayers being played/announced from mosques five times per day. I'm not sure whether it's possible to separate religion in culture in countries like that since religion pretty much is the culture to a large degree. Overall, I'd say that religion isn't dying universally though, but perhaps it is in the western world.
It is dead. And we have killed it.
Wars death and killings have always been over economics and as an objective rule never religion.