well i reckon we'll have a hell of a population problem. apart from that how boring would it be to live forever?
Also you can pretty much say goodbye to evolution until of course our sun decides to die and then we really need to be a more advanced species to survive that, then in a trillion trillion trillion trillion trillion and so on years when there is nothing left except a huge universe with almost nothing in it how are we going to survive?
Nothing lasts forever and i'm glad of that tho i wouldn't mind a few thousand years extra... can our brain hold that much data? i thought it could only hold about 1000 years of life.