I decided a long time ago to let people live their own lives and make their own decisions. Trying to force/coerce/guilt people into actions has proved historically to be a bad practice. I will educate , that is all. If, after sharing some of the things I have learned, some people want to cut down on eating animals, or hopefully give them up altogether, blessed be. I think that any meal without animals is a small succeess, so even if an omni engages in a meat free day a week, at least it is a start. At least it has them thinking about what they are putting into their bodies.
Of course the goal is animal free, but I will take a "Flexitarian" over a non thinking omni any day!