Hey man, when I was working in that field, we had really strict controls on who could access the data. I had to sign A PIECE OF PAPER agreeing not to misuse customers' personal data before I could get at it. Plus I'm pretty sure the company did a cursory background check before they hired me. And there's a form that government intelligence employees have to click through sometimes before they get the data.
Hey, good for you! But how am I to verify that other companies take the same level of care?
Also, just because engineers have to jump through hoops to be able to run SELECT on a database, doesn't mean marketroids and sales don't get free rein on using it (or passing it to other parties).
Privacy secured.