We put everything on credit cards but always and I mean ALWAYS pay them off each month. Spend is around $25,000 per month. We use the points for travel. The credit card business is great for the Banks (I know first hand) and if you aren't careful can really screw up your personal finances. You could view it as a tax on the weak and stupid I guess. A bit like casinos, tobacco companies, etc.
Like 7322454, my monthly credit card expenses are... $0.00 because I do not use credit cards.