Here's other truths parents need to tell their kids.
They only exist to extend your genes.
They only exist to fulfill your need for grandchildren.
They only exist so that they can take care of you when you're old.
They only exist to fulfill your "obligations" to a deity.
They only exist so that they can solve the world's problems you never cared to fix yourself.
They only exist to fulfill your need for your family lineage to continue.
They only exist to fulfill your need in having someone follow in their footsteps.
They only exist so the government can have more workers to benefit the economy.
They only exist to fulfill your need in wanting the entire human race to continue...because lIfE iS pReCiOuS!