Yes indeed that is the truth. There will be people that an partake in a responsible way.
The interesting point to consider is that alcohol, no matter how responsible you are, effects the capabilities of the Mind. That is why there are laws in relation to driving while intoxicated. Without those laws many responsible people would be less responsible.
So why would an intelligent person want to dull the capacity of their mind?
From a person that does not drink, sitting in a group that does, I can say that the capacity on intelligent conversation deminishes the more people consume, yet they remain unaware of this and even think they are offering great wisdom.
I know this as I am usually the dedicated driver.
Regards Tony