Issues such as where you will live, religion, careers, money, and having children will require an attraction that has some commonalities. For instance, if you enjoy the adventurous side of things and would like to move to a fast-paced city, that may not go over well with the one who prefers to live a quiet life in the country.
Or if you tend to be the type who spends their money as soon as it's earned, the one who likes to save might find this to be difficult to live with long term. This is where similarities will make a significant difference in a relationship.
Don't Expect to Change the Other
What often happens to couples who are the opposite is that eventually down the road one tries to change the other. Suddenly they don't find those opposite qualities to be so endearing. This can lead to a new mission in life, the one of reshaping the other.
It's important to realize that everyone has differences, which should be respected. Even if it's not something you agree with, it doesn't necessarily mean it's wrong. If you go into a relationship attracted to someone but determined to eventually help them see their wrongful ways, it will likely backfire. People are not meant to be molded and shaped like a piece of clay.{relatedarticles}
Sure, there are things that everyone could change. But it's not our job to try and change others. We are responsible for ourselves, no one else.
At the same time, it might help to learn how to embrace some of those differences. It will give you a better appreciation of that person and the world at large.
Wouldn't this world be a pretty boring place if everyone was the same? Think about it, would you really want to wake up and face every single day with someone who is just like you? Oftentimes what keeps a relationship alive and growing is the very fact that there are differences.