See related Answers.com question below for some ideas.
it matters how old are you
Ask them first then act very responsible.
I hope you have your own house if you are 20.
There is no true way to convince your parents to buy you the game. However, you can always show them you are responsible to handle the game content. I would sit down with your parents and talk to them about their concerns with the game.
You could convince them that you are responsible enough.. I don't really know it depends on the parents.
What? Just do it. Someone has to and it's your room. Don't be childish, be responsible.
Tell your parents you want a dog.Then tell them what kind of dog you want.And if you act all responsible and do your chores without being asked to that will show your parents you are responsible for even a DOG!
One way to convince your parents that you are trustworthy and responsible is to show them. Ask to take on more chores at home, and do those chores well. Do not engage in any kind of behavior that will paint you as untrustworthy in your parents' eyes. Trust is one of the hardest things to build, and it can be shattered in an instant.
You can tell them how responsible that you are going to be and it can be embarrassing if they come too.
You have to show your parents that you're responsible. Taking care of goats is a big responsibility and a lot of hard work.
If you mean convince you to get one, you have to be persuasive. Plan out your argument and what positive points you will put out. Let them know you will be responsible and will take care of it well.
if you are more responsible, your parents are more likely to let you travel alone. they are probably just worried for your safety.