Several reasons why many choose not to trade news;
i) They don't have fast enough access to infomattion
ii) They don't have access to the right information
iii) They don't know enough to interpret the information
iv) They don't have access to robust enough pricing
v) They trade in such a way as to make it suicidal
vi) It doesn't fit neatly into the world of 1 minute charts overlayed with 27 different indicators.
vii) In summary it requires a little more of an investment in time and knowledge in order not to over expose yourself to risks you don't understand.
Personally I don't look at it like that. For a start, market moving news can happen at any time, so whether you like it or not occasionally you're gonna be sailing along in relatively calm waters and suddenly you find yourself carried along by a tsunami. At that point it's already too late to decide you don't want to 'trade the news' you ARE trading the news. So you better just deal with it.
Secondly, I think that most people out there are smarter than me, so while I will look at any major news story, be it geopolitical, fundamental or whatever and have an opinion of my own, I will also look at what the market's reaction is. The stronger the theoretical direction a news story should point it in, the more significant it becomes if that's not what materialises price wise. So this stuff can give you a huge clue to positioning etc. And while this type of fuzzy, non linear analysis is harder to do if you're not sitting in a large dealing room, it's still possible on a smaller scale. I just think that a lot of people use short term technical trading as a crutch.
Small rant over. Have a good week everyone.
GJ