as far as investors and traders "blabbing", I think to break it down to a basic psychological level.....human beings strive for ACCEPTANCE.
I agree with the above. For the people who are paid to predict of course there is a reason. For those of us on ET, I think it is a matter of conversation and perhaps recognition. Since most of us are TA-type traders, our predictions don't really matter anyway.... being wrong is just about as good as being right.
predicting is fun. Predicting is a bet that doesn't cost any money. What you should ask yourself is why does it make you upset when other people predict ?