When people discover I eat a live food diet. (I say discover because I wait for them to notice instead of telling them)
I tell them that it is the only way I have been able to feel clear and experience non casual joy. I love waking up feeling great just being alive. I also mention my creativity and spirituality reach better levels with each day. Sometimes I mention my former diasterous health problems.
I also tell them "what we seek is energy." This is the way to it.
I never bring animal politics into the conversation because it throws off most meat eaters and because I'm more interested in human politics. We need to free the humans first

Its dificult explaining to someone that we collectively arent free although it seems like it, so I don't mention that at all either.
Sometimes if I feel especially spiritually connected to some one who askes about living foods I'll tell them that another bonus of it is the ability to experience more of the truth.
One such incident was when I was watching CNN in '04. The station was covering a current event that still is happening. A public figure was giving a spiel about the issue.
A warm feeling came over me and if feelings were words they would have said: "its not true, He's telling a story. Don't be angry, as We heal we'll all know this."
That kinda stuff happens all the time now. Sometimes I wish it didn't

However I don't usually share stuff like that with strangers, I think it should be a delightful surprise.
So yeah, I stick with how great it makes me feel, and if they new me before they've already notived I look 5 years younger.