I agree with C-MayheM. 2 beers/day, commonly defined as moderate, acceptable drinking by most studies, fall in to the cheat food category, or "discretionary" calories.
Excluding any pre-existing conditions or diseases from excessive drinking, here are some of the effects of alcohol (spirits, beer, or wine) on fitness:
1. Excess calories: regardless of whether it is a low-carb beer or not, you are still getting calories from the alcohol. These calories are considered non-nutritional calories.
2. Alcohol lowers inhibitions: Which is good for some things

but not necessarily when it comes to chicken wings and chili-cheese fries. Again, potential for more calories, as it increases your appetite, even if it is healthy food.
3. Alcohol slows fat burning metabolism and absorption of vitamins/minerals.
4. Alcohol causes dehydration, and reduces testosterone levels, both of which can slow muscle growth and repair.
While none of these are insurmountable when alcohol is kept in moderation, it will have a "slowing" affect on what you are trying to achieve as part of your fitness goals, particularly if you are trying to reduce body fat.
So are two beers a day bad? The answer is, it depends. Look at your goals and see what they truly are and what effect the alcohol will have on those goals.
There is something to be said for moderation. You aren't always feeling like you are missing out on something, so there is less temptation to "binge", whether it is beer, pizza, or both.