"many christians would disagree with you about drinking alcohol being a sin, tv being the devil, sports being sinful..."
I agree. In and of themselves those things are not sins, but it's when we love them more than Jesus Christ that it becomes idol worship, or wrong. When Jesus asked Simon Peter if he likes these things more than Him. Jesus was showing us that we shouldn't like anything or anyone more than Him. He doesn't want us to have boring, unfulfilling lives. On the contrary He wants us to have abundant life. But if your sports watching is keeping you from His Word, going to church and bible study, family time, prayer time, etc. you should consider prioritizing your time so you can worship Jesus better.