For yourself: A parent experiences boundless love. While you can love your spouse deeply, the unconditional and uncontrollable love for a child is unmatched in creation.
For your future children: Although we only meet them when they are born, our children’s souls are waiting in a celestial transit area for their time to come down to earth. There are souls that are destined to be parented by you and your wife, eagerly awaiting their chance to be born.
For your parents: You can only appreciate all that your parents did for you by in turn doing the same for your child.
For the universe: Our parents may not have been perfect, but whoever they were, they bothered to bring us into this world. And they were brought into this world by parents who were willing to go through the same thing, and so on throughout the ages. The fact that we are here is a result of countless generations of procreation. They have given us the greatest gift of all — the gift of life. Are you honestly saying that you are willing to break this chain of giving in order to maintain your current lifestyle?
For G‑d: For whatever reason, G‑d wants us to feel what it’s like to be like Him. So He invested in us the power of creation. The drive to procreate is the most powerful instinct because it is the most G‑dlike. G‑d has offered to share His divinity with you by becoming a parent. Will you turn down such an offer?