Voxels?

I was browsing the superinformation highway, and found something about voxels, (specifically, the voxlap library, written in C). I've learned that voxels lost the war against polygons, and now we all are stuck to them, and to silly clipping problems

But voxels are a pretty cool guy, they can represent real objects and even mechanisms with various resolutions using voxels as 'atoms', and they are not afraid of systems without 3d acceleration.

So, /prog/, tell me, in your opinion, why are voxels so ignored, and what could be the practical application that will make them a 'mainstream' technology?

In case you dont know shit about what i'm talking about, watch these

http://www.youtube.com/watch?v=TjmRPjnWJ5g
http://www.youtube.com/watch?v=Zl9CiGJiZuc

>why are voxels so ignored
storing high resolution voxels requires too much space

>what could be the practical application
algorithmic generation of volumetric data (quaternion functions)

>make them a 'mainstream' technology
once the number of pixels <= number of ALUs we are talking