No, speculation is actually a very good thing. It helps to determine the real open market value of something, so economy can work properly. If prices were dictated by some central organ, it would be planned economy like the one that was in Soviet Union - time has proven that it doesn't work, because without market signals it's impossible to allocate resources efficiently. Those who hate traders are usually just envious of them, because it looks like traders are just making easy money. But in reality it's a very hard job.