I think it was necessary in the past, when they didn't have science, and needed stories to explain things. But now, i think (and hope) that people are intelligent enough to make it through life without leaning on "God" for support. We have science, we can explain things that could never be explained before. We live in a free country, a mostly free world, where our own government protects us. We no longer need religion.
However, since religions are passed down from parents to child, generation to generation, i find it hard to believe it will die out any time soon. Maybe slowly.