I support 99% because it's an awesome science and can save a lot of lives. The saving lives part is the part I don't like so much. People are meant to die just like every other organism out there. We're fucking up the global ecosystem by overpopulating everything and it's only getting worse.
I remember hearing something that if humans were to have age limit, the average human would live between 8000-10000 years before dying of an accident or something related. Wish I could remember the source. oh well, my brain is a bunch of jumbled random stats