My DM is the hardest working man I know. He is a family man and sacrifices a lot for his career. This is my first visit to this site and it must be the place for unhappy folk to vent because our job is all not that bad. I have limited work experience outside Merial, but I will not leave as long as I am working with BG. I wouldn't want the responsibility and pressure of a DM.
Sales is fun, people! If it were easy we wouldn't make so much money. A bonus is just that, you can't count on it and not everyone can earn a big one every year. Hell yea, its unfair when expectations are too high. But I admit I don't always give 100% to the job. I have my lazy weeks. During a lazy spell my DM is there to encourage and help me out of the rut.
Stop dumping on the DMs. Pull up your pants. There are bigger problems we face that endanger our lifeblood.