Alcohol is a very polarizing subject, even outside of the workplace. And rightly so - it can be a destructive force, and does require more personal responsibility than many people have to use it "appropriately".

And beer especially is loaded with gender baggage as the drink for choice for men. In light of all the recent discussion about gender equality in tech (not to mention "rape culture") having a keggerator in the office can easily be construed as throwing your company's hat in the male-privilege ring. Beer enjoys a better reputation than liquor, at least, but would the conversation change if the office stocked wine? Or drink with the opposite gender stereotypes, like maybe strawberry margaritas on tap?

I like beer (and homebrewing) and have no problem with it in the office. But I'm a young, white, male, developer; so no surprise there. It would appear I am who these companies (think they) want to attract and retain.

But assuming my demographic is not the only one who should feel comfortable in the office, I could see erring on the side of sensitivity and "professionalism", and not having beer on tap in the office.