What is your opinion on file sharing?

I have found that this can be a divisive topic. I do not pay for any non-physical content, that I can think of. I have occasionally given money to content creators directly, rather than pay for something. In total, I have probably pirated tens of thousands, if not hundreds of thousands of pounds worth of content. I have only ever bought one digital album, and lost it after about 2 weeks after it disappeared from my iTunes, who then refused to give me the album again because it was a limited edition and they "didn't have it anymore". They didn't give me a refund.