Well, now it seems once again that you're using reproductive success as your criteria for whether or not somebody is being harmed, but you say that's not what you believe. Maybe it's better to go full thought-experiment on this, so:

There is a drug called Reproductene. Taking it causes extreme pain, permanently disables your ability to feel happiness, damages your memory, destroys your imagination, and causes you to have strong cravings for more Reproductene. It also creates a new human being with 50% of your genetic code every time you take it. This human being is created an adult already addicted to Reproductene. After taking a hundred doses of the drug and creating a hundred half-copies of you you die. Reproductene is in large supply. Is taking Reproductene harmful?