I would have a billion questions about who it is. If I had no options but to marry the person then I will have to learn to live through it. But what is considered a good man? Someone with money and power? If that is the case then maybe your parents don't think you can make enough money to satisfy your parents. Your parents want you to live a happy life by "giving" you to someone who they think can take care of you and your parents without even you meeting the person before. But is that really happiness? Maybe in the end it is, or maybe it's not. No one will know what will happen in the future. Maybe you can show them that you can be independent and don't need a man to support you and your family. Last and final choice, run away from home? But that is a selfish thing to do. Happy or sad you still gotta live. Why not live everyday happy =)

Okay, if you don't know/like him or her, and your parents still want you to marry. You can tell them give you some respect. You are a person with your own character and you have the right to decide what to do with your life. If they want to force you to marry someone by force, you can choose to escape. Or report to local authority (let's say the local police) for their inappropriate action on you.

You have to be honest with your family and try to change this situation. In peace the things could be better! But i can imagine that it's a very complicated! Good luck!