|Communism is ideal system. And there is noting ideal in real world.|
I wouldn't say either of those things. The biggest problem with [ideal] communism is it relies on a great deal of trust, and also that people aren't greedy. Neither of which are true.
Communist ideas work extremely well in very small circles of people... but the more people you add the more difficult it is to sustain. Something large scale like an entire nation I agree could never work. Human nature just contradicts it.
|You can't make someone rich without making someone else poor (or less rich).|
This is so not true. Not even of capitalism.
But of course... "rich" is a subjective term. Maybe we have different ideas of what "rich" is.
|The other thing is the government. If it fare, nothing can't go wrong. But in real world it is not possible. In communist Russia if you would say anything wrong about government you would be put in prison without trail. Authority often tend to overuse their power to get more than normal citizens, etc..|
Communist countries tend to be more totalitarian... which is somewhat necessary to enforce it, but ironically contradicts its core principles. This is probably why there hasn't been a functional communist nation yet.
China is functional, and claims to be communist, but the income gap and work conditions are severe to the point where it's basically communism in name only.
|Good capitalism is better (like old US|
Define "old US" capitalism.
Anything before the industrial revolution was horrible. In fact the industrial revolution was probably the low point of the country in terms of wealth distribution and work conditions. The general public was basically a slave class.
Capitalism has to be tempered with social policies or it simply doesn't work. It's just as broken as communism is.
Modern US capitalism is actually pretty close to what would be "best". The only problem is we've let businesses corrupt the government to the point where it might not be recoverable.
There has to be a clear line between governmental interest and business interest, and that line has gotten blurred. The government needs to stifle business when necessary to protect individuals, while still encouraging economic growth. Government's primary goals have to match those of the people. When the government's goals match those of the businesses, things start to get ugly.