I would disagree with you on that. I think if given a choice of using a voice activated options or a touch activated process. Most will use the voice activated process. It is easier to use. Why would they not choose this process? I have it on my Note 4 and it works great.I'm not sure "most" is appropriate..."most" people do not probably use a voice activated feature for Now.
Having never seen anyone use that feature, my opinion would be that "most" people access Now via a non-voice activated Android phone or through an iPhone...or simply do not use voice activation for fear of battery drain or not being acceptable behavior in public.
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Agreed..... There is an update coming to make Cortana voice activated like Google Now.As another poster up this thread pointed out - Cortana will also be voice activated with the Lumia Denim update currently rolling out in Europe and soon the US...
See video here https://www.youtube.com/watch?v=I3LCxNFzWTA