Man, this parenting thing is tough.  Parenting is about the intricacies of raising a child.  
I'm hesitant about having kids. What are some of the responsibilities of a parent?
Supporting the kid in various ways, such as emotional, physical, social, and knowledge.  
Do people from different social classes use different parenting methods?
I am not sure about social classes, but each child is different.  It is a continious responsibility that has a unique course for every kid
When I was growing up, my parents just used to hit me with a belt if I did something wrong.
That can be considered abuse by some.  The government and society itself have some role in child raising too
I wish the government would of taken me away from my parents because I was raised in a bad environment.
Child abuse is a very real thing in society.  Not just the parents, it can happen at school or other communities
I would never do that to my kids. If I do end up having kids, I will give them all the love in the world.