Music with a strong, repetitive beat also screws with your head, the high levels of adreniline involved with watching a sports contest certainly screws with your head, look at the behaviour of victorious fans after a football match, they are high on adrenaline. Your body produces it's very own 'recreational drugs' inside you every minute of every day, Dopamine, Adrenaline, Testosterone etc, and they all impair faculties to a certain degree.
I'm Tea-Total, I don't touch alcohol, never much enjoyed the stuff anyway, because I never enjoyed the feeling of being drunk, you lose balance, you can't think properly and, worst of all, you are convinced you are far less drunk than you really are. Not all recreational drugs are for everyone, but just because I personally don't like Alcohol doesn't mean that I think nobody else should be allowed to either.