I was raised in too. I had a personal experience like yours with the anthem (only with the flag salute though, and in my son's school) It was the experience that convinced me that I needed to figure out what I believed.. because I had been told what to believe all my life. Knowledge is power...so do the research and find yourself. It takes time and effort, but is well worth it. Over time it will free you from the mental control of the watchtower. I don't think anyone is completely free of it... but we have a great resource here of people who understand and information about pretty much any issue we have with the organization.
You're not guilty... that's something that the organization has put in your head. Eventually you'll realize they have no authority to do so.
Coffee
Oh...and WELCOME!!!!!!