Just a thought

If we live our lives on this earth as if there is an afterlife, something more, and in the end it turns out we're wrong, what harm is done? Conversely, if we live this life as if there is nothing more, that this is all there is, when we're dead we simply cease to exist, and based on that live this life like there's no tomorrow as they say, in the end if we turn out to be wrong we spend eternity in somewhat less than desirable conditions. I say, why take the chance? What's seventy or so years compared to eternity? I'd rather live in expectation of eternity and be wrong, than live arrogantly denying eternity and be wrong.