Where, in what country has Communism actually worked? There are a thousand different ways to approach your reply, but there's only one way I can put it. Communism sounds great, starts off as a grand plan. However, the results of communism have ended in poverty, starvation, oppression and tyranny.
Imagine this. You go to school, let's just say High School. Your GPA level is important, you want to get into a good college to get a good degree and better your future. 30% of the class does really well, studies, works hard on their assignments and receive A's. 20% of the class studies just as hard, but don't have the same memory retention and fall a bit shorter with B's. 30% of the class tries so-so and receive C's. 20% of the class doesn't try at all and receives D's and F's. Now a communist way of thinking would make the entire class on average a C level. The people who tried really hard, studied and worked for their future only get a C, while the people who didn't try at all also received a C.
Communism just doesn't work.