Capitalism in itself isn't based around god - american capitalism is. Now capitalism in its true form, i.e. everything's a trade, there is no free lunch, you can't get something for nothing; that's the way I'd like to build our world. I work my everyday life around everything being a trade; where I give, I get something of equal value back, or it's a waste of my time, or the other person's. I'm not talking money here either necessarily, but say you have a friend you hang out with. This person shows you appreciation, and is generally fun company. This is a way of payment for me being a cool person back. We have a trade-off. Now if this friend started dicking about being an asshole, I'd invest more than I were getting back if I were to keep hanging out with him/her. Thus, unfair trade and no deal.
Communism takes the people with capacity and potential and makes them work for the people who don't. With everything being government, things are heavily taxed. Say you're a surgeon - you've gone to school for god knows how many years, you're intelligent and you work hard. In my book you deserve the money you make for yourself - you've earned it. But with communism, this money isn't yours in full, it's everyone's. The result of your hard work, the hours you've toiled away, is given to people you've never even heard of, who for all you know may just be kicking back and enjoying the ride.
I don't believe communism is as nice a system as everyone keeps saying it is 'in theory'. And yes, before you feel the urge to tell me - I know I'm a greedy, coldhearted bastard, I've been told before. And no, I'm not ashamed.