What do you think of cross-cultural marriage?good or not.

What do you think of marriage with same nation?
there is no common good or not good.whether good or not depends on different people.but some things must be considered:
the language,both sides should have enough method to intercommunicate with each other
the culture,both sides should understand the culture of each other
...
if they can deal better with these things,cross-cultural marriage can give you fresh happiness,otherwise,it can become your nightmare