Jeez. Just my opinion.
It's an opinion on a prediction, not a preference. "Nintendo's going to open a printer producing branch" is disputable, unlike "I like pepperoni on my pizza". Saying something is your opinion is a complete cop out that's used as a way of avoiding any argument under the sun. "I think 2 + 2 is 5" "No, if you add 1 to 2 twice, you get 4" "Well it's my opinion
that it's 5!" just doesn't work. If everything was just "someone's opinion", there would be no discussion, no corrections, and no advancement. As long as it isn't a preference, every "opinion" under the sun is a position that can be defended, and if it can't, it's not sanctified and impossible to argue against just because it's an opinion.