The fact is that, this kind of marriage usually started without asking for opinion. This is a serious problem that can cause a lot of troubles. Here are the reasons:

It could be the cause of suicide

Many people kill their selves just because of this. Sometimes they love other person, but they can’t marry them, which leads to nothing else but killing themselves. Like many articles in newspaper, they had no choice left, which is kinda sad to be honest.

They aren’t likely to engage well in the family

They might not have the same interest, which is what lovers are looking for in each other. If you don’t have the same interest you won’t likely to be engaged well in the relationship. Which is true. Not even a couple who seems to be perfect at first.

This kind of marriage won’t last so long

Some of them just met then get married. Which is not a good point. The longer we know each other, the longer this relationship is going to last, because everybody needs to understand each other before getting married. Even if they live with each other till the end of their life, it's mostly not because of their love, it's because of their children.

See? These problems are the serious problems we need to think about before making any arranged marriage, and that is why we strongly disagree with it, and please parents out there, if you decide to do so, please please please! Ask your son or daughter about it first. Let them decide, because it's their life after all.