It's not a wish for death -- it's an affirmation of how good my life is. I'm happy, blissful from time to time, with no real regrets or complaints about my life to the point it is at. From this point, life can get better or worse, but at this exact moment (usually a span of a few hours) I am in heaven.
And it's not a feeling I get with the short-lived adrenalin rushes I crave from time to time, or other stimulants (though coffee can usher me in to a state of euphoria, it's not the same). It's the base line of my life gliding above the clouds.
Life. is. just. good. =) [for me, for now]
And the expected value of it is even better... given enough effort. But with no more effort, were no more time to pass, now is perfect.