Arranged marriages

Hello, today I am going to write about arranged marriages because it's something I can't understand yet.

I think arranged marriages shouldn't exist because everyone has to get married to the person he or she loves. But there are a lot of parents that don't accept this because they think that the family must be close to help each other, and they think too the family is more respectfue than an unknown person.

The parents find it normal because they are born and live with this tradition.

There are some situations where the girl doesn't want the boy and she escapes from home and goes with another family or her boyfriend. The arranged marriages something we should look?