Your child is totally dependent on you. You are their sworn provider and protector, both when they're young and any time they need you for the rest of your life. When they're young, they'll welcome this. When they're a little older, they'll start searching for a partner of their own, and their affections will begin to shift to other people. You'll find yourself both weirdly jealous, and more protective than ever.
Nobody is ever going to be good enough for your little girl or boy. The moment they bring their first partner home, you'll find yourself micro-analyzing their every word and movement and questioning all of their motives. You're ready to unleash the full force of your wrath upon them if they ever dare to harm your baby, and you may not even be shy about telling them that. It may sometimes make you feel like a monster, but it's the same way your own parents felt about you!