Nothing wrong with drinking, in my opinion...
but there is a big difference between having a drink or two and being drunk... and yes, sometimes you might just have a need to get good and drunk... I've done it more than once....
with that said... no different than driving... if you are 'drunk' you don't need to be anywhere near a gun... period.
At the very least, if a bad thing happens it is going to put a whole different perspective and possible problem slant to the outcome.
the problem in my experience is a lot of folks who drink a little too much just can't figure out when they are impaired.