Become a vegetarian

I did it when I was living in Canada for half a year. I now realize that we don’t need to eat meat to survive… However I am eating meat now because alternatives are too difficult to find however once I move back to Canada I will be taking it up again.
One thing I did find annoying was people asking me why I don’t eat meat, I usually said…”Well why do you eat meat??”
Does anyone know any good quick accurate facts we can send out when we are questioned about out future choice?