Perfect grammer can be bad

This is for the topic of correct language use. Through interviewing 5 different people for our assignment I learned that people get annoyed when other people use perfect grammar around them. They all said it makes them feel like that person is talking down to them and makes an awkward feeling when communicating with them. I found that I felt more comfortable talking with the millionaire that had very poor grammar because I did not have to worry about how I sounded talking to him. I think it is ok to use grammar "incorrectly" rather in just a different style. Unless you have no idea what the person is talking about there is no reason to look down at them. That millionaire had terrible grammar and didn't care, thats who he was and he made it big financially without needing perfect language use.