I have heard this for a number of times while I was doing patient counselling, the question of "is really having a beer a day, good for the heart?"
...and I always answer with "if you are not a beer drinker, why start now?" because it is true that we should not go with what's the latest fad, or what so and so said. In giving a diet guide I do not pressure someone into following a STRICT list of what he can eat and what he cannot eat. It is a partnership between the health instructor and the patient. We go into adjustment according to your daily meal plan so you will not have a hard time following it. And doing something as big a leap as drinking beer just so you will do what your friend is doing is not necessary.
Another is facing reality that beer is not the only thing to have to have a good heart. There are a lot of factors to see to, and beer can be ruled out of it. For one, beer is not always spiritually (as is written in the bible regarding drunkenness) and socially acceptable. Another is, it is addictive and having it daily may lead to two, then three, then to who know's how much. It also have an alcohol content that needed to be measured especially if one have a heart irregularity. Those with high sugar levels and triglycerides should not take even a bottle. Same goes with red wine!
Remember, in every rule there is an exemption!