If what you say is true, your mom doesn't sound like she'll be winning the mother of the year award anytime soon. But as long as you have a roof over your head, access to an education and generally having your basic needs met, she's right, there are alot of people out there worse off.
You've said your mom loves sex. Well, if you were as "grown up" as you think you are you would know that a great many of other adults do to. What do you mean by drinks alot?
Most kids have to do chores (trust me, this is better than going to work day after day). They also have to babysit younger siblings (you have to prove you are responsible some how. Parents also get to choose when and where the kids can go, it's alot more dangerous out there than you think. And there have been countless young girls, like yourself, who felt as though they were "mature" and could "take care of themselves" that went out and never came home again.

