Beer is wonderful and you should always accept it when offered.
A friend of mine once told me that if someone offers you a beer you drink it and say thank you. Don't worry about the brand or alcoholic content! Just be thankful.
From the time I was a kid I remember the smell of Busch beer from early morning fishing trips on the coast of Galviston. Those were the days!
I'm here to tell you that all beer is good and we shouldn't be snobs about it at all!
Drink up and be happy
Prost!