Repetition of some experiments must occur for a variety of scientific reasons. The validation of data is critical to minimize or discover potential error. Experiments must be repeated to account for even the slightest change in variables such as dosage, temperature and weight. Most researchers could make more money in other careers. People choose to go into research because they want to help people, and find answers to complicated questions.
Animal research is often a vital step in finding the answers.
In reality, research dollars are scarce and are becoming more so, with approximately two-thirds of all worthy projects that seek grant money going unfunded. Animal research itself is and will continue to be very costly. Making sure animals are housed, fed, watered and appropriately cared for requires technical and veterinary staff dedicated to the science of laboratory animal medicine. Animal research is vital to continued progress in science and human and animal health. The payoff for animal researchers is not money but the treatments and cures that benefit both humans and animals.