I often do the same when setting up a debate in class! I set the topic, get initial opinions and if anyone is strongly on one side of the argument, I have them debate the other perspective... I find it forces them to really think about thr language they use and it pushes them much more. It's easy to speak about something you're passionate about, arguing the opposite is a great way to stretch them linguistically!

I don't think that's what's at play here though, more a question of being unable to admit when you're wrong!

And no offense was taken, I just wasn't sure if you were looking for agreement on something!