Ageing is a genetic disease. It has to be cured. We evolved to adapt to specific environment. Now that we are changing this environment we must change ourselves as well. Everyone should be given an option to die but it should be just one of a few options.
Not as long as religious fanatics, anti gay (shame on you, Uganda), anti abortion and other zealots, dumbasses who have 10 kids and nothing to feed them with and other kinds of people still exist.
Then again, I'm all for it if we can colonize space sooner...