I don't have a big philosophical answer for that, but I can say that I've noticed that people respond very well when I tell them about veganism (I mean, there is a relatively high proportion of people who get value out of what I have to say). So when the time is right, I intend to supercharge my recipe blog into a full-blown conscious eating site with lots of resources on veganism. I really think the world is calling people to this service.
Anyone else want to have a go?