If you don't walk, you don't need legs. If you don't think, you don't need a mind. If you walk in a cave, you don't need civilization. If you're a coward, you don't need heroes. But why don't you live in a cave? Why do you use medicine, transportation, science, Internet and many other things? Why don't you eat your own words when you say such terrible things? Because it is poison and it will kill you? Why do you suggest this to others when you cannot apply it yourself?