The problem with our economy is not the profit, but what's done with it. The problem with mankind is not found in our minds, it's what's in our hearts (sin). 
God is not a "thing" as you have opined, but is a Person who truly loves you and wants the best for you. Jesus Christ (the only Son of God) came to Earth to lay down His life as a ransom for our sinful selves and make a way for mankind to know God as He was known in Heaven. 

Capitalism is free market trading. It's the most financially open system of free enterprise and making successes out of the poor there is. 

But let me get to the real issue of your statement: the people living paycheck to paycheck are are just like anyone else — they are free to spend their money as they see fit. It's not Capitalism's fault they don't manage their money properly. It's their fault if they sink and it's to their credit if they swim. Don't blame the water for the drowning man, blame him for not learning how to swim!

What? How did you get that from his statement, David? People who oppose God while human do NOT go to Heaven. Their spirits are dragged to Hell by demons once they depart their human bodies. 
Karl Marx is firmly entrenched in Hell suffering mind-blowing torture and anguish at the hands of lecherous demons. Ironically, the same demons he empowered in his life as a human are the ones thrashing him physically and psychologically abusing him now — just like all people who waste their lives in rebellion toward the Almighty God.