Dear,
You said that the capitalism makes a person "greedier." Is greed inherently bad? No, because if you look at the stock exchange and other money markets you will find that it is only "greed" that drives people to invest, an inturn make more and more profit.

The constitution of a country helps people to make sure that goverment does not infringe upon the rights of people, and does not involve itself in discrimination among its citizens. As far as people to people contacts are concerened, there will always be a sense of prejudice and discrimination.

There is no such thing as 100% capitalism. The United States and other European countries have injected some amount of socialism in thier economic systems. So one cannot say that China, Cuba, and Russia is fullfledged socialist or US is perfect Capitalist.

It is ofcourse true that the philanthropists are not bound Capitalism to help thier fellowbeings, but then it does not, at all stops the acts of donation and service.

I personally believe that since every instituion from religion to economics is a manmade system, therefore it bound to be flawed. Mankind is in the continuous process of evolution. Thus, the flaws and loopholes will be ammended with the passage of time.