what is it?

it happened just a couple of hours after having lamented here on the lack of ideas....
i had to take a train and then had to walk 30 minutes...
i watched the signs of autumn around me....
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i was asking myself the following questions:
1-
why do i suddenly find my original idea for NaNo'11 somewhat boring?
(a post-apocalyptic half-romance, half-realistic story centered around a middle aged woman who has nearly lost everything but her faith?)
is it, and/or the setting truly boring?
is it overrepresented/overshared in/by movies/modern literature?
what is you opinion?
2-
can i come up with something i, the writer-to-be like?
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answers to question 1 are kindly waited/appreciated among the comments of this post, thank you very much :)
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one potential answer to question 2 was this: whoa, yes, and i started scribbling frantically on the street, not really caring about the passers-by. mind you there were not many of them, you see, it was a bit raining :) :)
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so i have this other idea: it's about a half human, half other-wordly creature, and their species is about to invade the earth.
what dou you think about it?
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