Marrying Within Ethnicity

Well of course everyone is entiteled to do or say or decide what they want THANK ALLAH for that i am not against that at all. Live and Let live but..................
i am also giving my opinion and i think that one should not decide with whom to live with rest of her/his life (i thought she was talking about marriage but i may be wrong) only because of the "cast" or "ethnicity". There is more to it in life then just that. I know same ethnicity can make life little easier but thats not all in life a person should look for. I can sum up quialities but you people are mature enough to understand what i mean.