I agree your opinion about trading because speculation will made into different direction the work from our self was being concentrate and the market to check the development and falling each and every time while we are selling and buying it will be the most important thing for a trader.
Of course, some do. Speculation sometimes makes you win but it is more like you are trying to bet if your speculation will work. Speculation is like sort of gambling indeed, you don't base your decision with theories, evidence and so on(pure luck). You just go ahead and do it. Technical analysis is a must in trading but if you want to try your luck, you can actually speculate.