I like to disagree with people just to provoke a conversation
A lot of people I know say the same about me... I must say they are right as I like to act stubbornly in face to face relation just for the hell of it.
Sometimes it's really weird as I defend thing I don't care for or don't agree with. I did start doing this when I was a teenager to fight my shyness... but I continue to do it because sometimes it's fun