Just for a counter opinion: I only drink on the weekends in social situations, but have gone 2-3 months without as an experiment.

I didn't notice any difference other than it completely resets your tolerance. After the break it only takes one beer to feel buzzed, whereas before it was 2-3. In a big city, I'd recommend trying it once regardless of the benefits because it is challenging from a social POV. A surprising number of events center around alcohol, and people think it is strange that you're not drinking.