Here's something to ponder... Sure once in a while your bank/CC payment system protects you from a shady merchant... saving you what... 100$ (max?). Personally in my entire life I can't remember charging back once due to a shady merchant but let's assume you've saved 1000$ because of chargebacks.

Here's one of the risks you have to bear to enable your chargebacks: http://mashable.com/2011/01/28/identity-theft-infographic/ ... worth it? Think how many insecure databases your name and address and credit card # (and sometimes phone number) are stored in across the net...