Yes, animals should always be used for expeiments. Scientific experiments are necessary for the survival of our species. Most people probably think nothing of eating a hamburger or swatting a mosquito, but experiments are cruel? Experimenting on animals has led to some of the best scientific breakthroughs of our current age. Most of us have lost family and friends to medical conditions such as cancer. These creatures make a sacrifice, but I do not see any people volunteering to replace them as test subjects.