Couples from different cultures may find each other exotic and interesting while dating, but marriage and children can change their outlook. Some of them may share a common religion, but others have very different religious beliefs. They can sometimes find ways to compromise when it comes to how they will raise their children, but their differences in this case could present them with major issues. Choosing how to raise their children within a religion could stretch their resourcefulness.
Long term relationships need common factors between the couple to survive, and even those from different parts of the world have been able to find compromises. When it comes to religious beliefs, there might be few choices available. Some religions are expansive enough to include the tenets of others faiths within their own doctrine, but others are very exclusive. It may be that one partner was raised in one of those exclusive religious beliefs, and it leaves little room for compromise.
There have been couples able to sidestep the religious issue by raising their children without any particular belief, but it may not go over well with their family. Most families have a long history within a particular belief system, and they expect their children to honour it. Choosing no system can be worse than giving in and allowing children to be raised in a competing religion as far as some families are concerned. A couple in this situation could find it might be best to search out a completely new religion that fits most of their own beliefs, and they can then share it with their children.
The difficulty of some choices in a long term relationship can seem overwhelming, but solutions are often available if the couple searches hard enough. While it could be difficult to begin with a new religion, couples locked in a cultural battle may find a new set of beliefs perfectly suits their unique family situation.