Move from USA to Australia?

I currently live in the United States, and I have been living here for the past 3 years. I am from Czech Republic. Since I have been here, in the United States, I think that it has been a horrible experience. I am sure that most American's don't notice it because they know no other way. I have been looking to move to Australia within the next 2 or 3 years, I just wanted to know if it would be wise or be a bad idea to move there because from what I hear it is a great country to live in... By the way I am 18 years old in June.