There is nothing wrong with a sober person, the problem is people with whom abstinence is usually associated. People like Mohammed Atta, Osama Ben Laden, Jerry Falwell, Pat Robertson, Dr. Dobson etc., these are the prominent teetotalers. It was the Fundamentalists who stuck the USA with a constitutional amendment banning alcohol.
So it is not any wonder that the average person would look at abstinence with suspicion.
Is it they ... or Bill W who make you queasy?