I am getting sick of all of the parties happening at work, and I'm thinking about shutting them all down and having no more birthday parties.
Why are you getting tired of the parties?
There were too many riffraff and drunks at the parties and I'm tired of co-workers out of their faces.
It's understandable to not want there to be any drinking on the job. What will the employees think about the change?
So what? I tell them I don't like birthday parties if they ask.
Have you thought about compromising and allowing parties, but no alcohol? Or keeping the parties to no longer than an hour and if they still want to celebrate they can go out after work.