Like so many people I was entranced when Jurassic Park hinted that there will come a time when extinct species will be reanimated. The book and film suggest this will be a bad thing. I've always had a theory that your views on evolution reveal a lot about your politics.
Consider for example that someone breaks into your house and steals something. If the government of the day gave you an option to terminate that persons life so as to stop future burglaries, would you think that is a good or a bad thing? It's interesting because there is no evidence that this person has any genetic code that makes them a burglar nor what degree of social stress or environmental upbringing let them to the action for which you could execute them.
Right wing people tend towards eugenics because of a simplistic view of evolution where nature does her work, the weak are culled and the strong survive.
This is probably how it has been for all of time, the fittest have survived because the have been victims or victors or opportunity. The thing about humans in the 21st century is that we have the power to change that. Our purpose should not be to seek the ultimate survival race but instead chase the ultimate diversity. We need to look at all providing an environment for as many of the variations presented to us by DNA as we can find and populate the universe with the most appropriate lifeforms.
Capitalism really should not be killing the poor in the third world - it should be creating lichens on Neptune.