Having worked on teams that super duper care about the mission it isn't always roses. Why are you leaving work at 5pm or taking a vacation? Don't you care about

Having worked on teams that super duper care about the mission it isn't always roses. Why are you leaving work at 5pm or taking a vacation? Don't you care about the mission? If you aren't drinking the coolaid you don't fit in. Also I have met a fair number of people who think the mission is so important that it gives them a license to be rude. After all what are a few hurt feelings compared to the MISSION. Where as working at a bank or a retail company no one is there because they are super into banking or selling generic household items. They are there to do good work and leave at the end of the day. They are professionals.