Individual cyclists may have a problem with alcohol.

Most of the group rides I go on take a final lap to go get a beer. Some go and have something non-alcoholic. Some go home instead of to the watering hole. I have never felt ostracized because I don't drink and ride

I hardly drink any alcohol at all, but every once in a while a pint or a wee drop just seems like a good idea, and you can't observe certain holidays without wine.