The ultimate microbial suicide mission! Most yeasts tap out around 12-15% alcohol concentration because they literally ferment themselves to death. It's like throwing the best party ever, producing all the booze, then dying from your own success. Next time you enjoy that wine, pour one out for the billions of single-celled martyrs who sacrificed themselves for your happy hour. Their final words? "Hey cool, I'm dead!" Natural selection never tasted so good.