Why are there still debates of Communism and Capitalism?

[Vash]

Both are just social/economy systems, neither has anything to do with freedom, democracy other than in the propaganda.

You can have a capitalist dictatorship...
South Korea was a dictatorship and had no voting system until 1986 or 1988.
Republic of China (Taiwan) was a dictatorship and had no voting system until 1996.
South Vietnam was a dictatorship until the North overran them.
Yet, only the propaganda that used by the U.S. government tried to justify the reason to help these dictatorships(the truth is all about anti-communist, enemy's enemy is my friend) claim those governments were "democracy and free".

P.S. You have to look deeper on the issues.
For example,
South Korea got huge amount of aid (during 50s~70s) from the U.S. who is the richest country in the world. The U.S. also stationed lots of troops in South Korea. Thus the South Korea did not need to spend a lot on their own military, instead they put majority resources into economy development.
North Korea, on the other hand, had next to 0 economy assistance. All Chinese troops pulled out just a few years after the Korean War. Thus, North Korea put majority of their resources into military instead of economy because they were on their own and they believed the hostile U.S. could attack any time. On the top of that, the U.S. and all its allies placed sanction/embargo on them.