When I look at the power structures of the modern world and the control that corporations have over our governments, I don't extrapolate positive changes should the powerful also start living forever.
Death is part of life. People need to stop pretending it's bad. If you feel it is such a bad thing, will you also cure death for every spider, every frog, every crow, every ant, every tree? What do you think will happen then? Or is life only important when it's a human?