It is a well known truth that bees are among the most hardworking animals.
I have personally admired them for their ability to work that hard and systematically, ever since I was a kid. 
Ants are my favorite, too.
Bees are so useful, and I doubt that life on Earth will be possible without them. 
Perhaps, the only thing that someone could blame them for is that they sting, but they only do that to protect themselves from any potential enemies.