Why are you VAC Banned on your main account?

A: Back in 2008 i have asked someone to gift me a banned account in a forum for Counter-Strike:Source moviemaking purposes (as you have to use bypasses that may get you banned via VAC). It was already banned at the time to not risk my usual account - as i did videos a lot i added all my contacts there, now that CS:GO is not related to the CS:S VAC Ban i simply turned the VAC banned one into my main account, my first account that i bought 2005 is still active and running though i you guys do not know that account simply because i only go on it when i want to have a relaxed and private time. I have never been VAC banned nor do i cheat.