The meaning of life is to perpetuate yourself forever through your DNA and through cloning. Every sperm is great. If a sperm is wasted, God gets quite irate. Now God can be at peace. No sperm need be wasted because there's no need for sperm.
All sperm is useless.
Its not wasted anymore. Maybe masturbation won't be a sin anymore, we'll ask the theologians that. God punished him, some think, not for masturbating, but for failing to carry on the tribal line by impregnating his dead bro's wife. I'd like the rehabilitate poor Onan, putting a little focus on God's overreaction in that instance. I suppose cloning will put all spilled sperm, no longer really needed, under a fading spotlight.