Hare Krishna to all,
Most people are not fortunate enough to live in the company of devotees and in places like Vrindavan. Especially in India, people tend to live in places where they were born for a major period of their life unless they move away for work and businesses to other places. So naturally, some people have friends/neighbors who are so keen to eat meat. I haven't studied Vedas or Major scriptures and all i can quote to defend my position against meat eating is that its prohibited in Vedas and our religion. The discussion is fierce these days as Cow slaughter and slaughter houses themselves are being regulated.
I just hoped if some Scholars and readers of Scriptures could quote the sources, verses and cantos where it is written that killing or eating of cow is a great sin and the reason why its so? Such discussion could help less knowledgeable people like me to bring awareness to others about cow protection and the need to quit meat eating.