I think a lot of folks don’t put stock in what it means to do something forever. You could do anything you ever wanted to a trillion times and make no progress to an end, and that’s not to mention you’d be the only immortal in this scenario. Your infinite will largely be consumed by darkness as entropy claims the Universe. As LordAmplifier already mentioned, it’d be pretty cool to have a much longer life in good health and choose when to go, though I say that’s just being mortal with extra steps.