Marrying someone of a different cultural background has advantages as well as disadvantages. We relate to one another through common interests and similarities. Being from a different background changes the way you view things. Being on the opposite end of the economic spectrum changes the way you live your life and think of your future investments and decisions both good and bad. Things such as religion or traditions also change how you would raise a family and create your home. Tension can occur because of disagreements.
A different perspective would be that you can learn a lot more from people of different ethnic backgrounds. Their religion, food and celebrations can all affect you. The cultural differences can improve your knowledge and broaden your interests. Certain normal standards also vary from country to country, changing certain experiences. If you really love someone, their race or culture should effect your decision of being with them.