Sorry, we can't hire you, we dont like your personality

I've heard about these personality tests that companies give to potential employees. I've never had to do one, but I have a good friend of mine graduating in May that has had to take a lot of these tests for places like Bank of America.
I personally think that this is a good idea for the sake of the company. People need to be able to get along in the work environment. Sure, work can still get done if the people don't get along, but there will definitely be higher turnover, and less motivated works. This leads to higher costs to the company, and less efficient work being done.
Yes, you may lose out on valuable skills that people have, but in the end it would lead to better profits for the company. A good example is with a sports team. A team can have a superstar on the team with amazing speed and skill, but may not get along with the other teammates. This leads to poor team chemistry, and a lesser possibility of winning. On the other hand, a team can have a group of "ok" players, but have great team chemistry, and win more games than the team with the superstar.