what are the pros and cons of the mixed marriage

With the modern soceity becomes more and more open and advanced,it is easy to acceptable for most people about mixed marriage.Marriage is just marriage,it is nothing to do with races,religions and countries,every person can marriage as long as they love each other.
Compared with traditional marriage,mixed marriage has two advantages.One is that it can promote the harmonious relationship between two different races or religions,weaken and reduce the possibility of the conflict.The other one is that it will improve human races gene,I believe mixed marriage can make races stronger,more beautiful and more smart generation by generation.
So,let's face the mixed marriage correctly with the comprehensive heart,it is nothing but marriage.