A potential benefit is figuring out how to make us smarter. For instance, let's say for the sake of argument that a group of people who all have gene seem to ha

A potential benefit is figuring out how to make us smarter. For instance, let's say for the sake of argument that a group of people who all have gene seem to have lower IQ. We research the gene and discover it's a malformed enzyme that doesn't function as well. We give them all free supplements of the enzyme and as a result they get back to average IQ and everyone is better off.