Childfree can be fun. Childfree can be icky.
How is it fun to be childfree? Studies show that parenting makes people unhappy.
How is it icky to be childfree? Studies show that having offspring is what most parents say brings the most meaning to their lives.
If you believe you should have children because God said so, you're hearing voices. If you believe you should have children because the Bible said so, you follow a book that you should read more critically. If you believe you should have children because it will make you happy, you should know that parents do not report that to be true. If you believe you should have children because it feels right: bingo. It feels right. Why does it feel right? Because you are from a long line of people who had children, period. Genetics and epigenetics or environment have combined to create a set of cells, you, which reproduce the behavior of cell sets that have been successful in reproducing. Chances are this set of cells, you, wants to reproduce.
So, many things inside you want to reproduce. But perhaps you have seen some things in life that make you think that you wouldn't be a good parent (your parents were not, or you don't have the resources), or that the world doesn't need a greater number of humans (when they crowd together they acknowledge each other less), or that you would rather spend your resources on making the world a better place for many people rather than a few people that are copies of yourself, or that making a copy of yourself (yes we know it's not a perfect copy) may reproduce suffering that you haven't yet learned how to ameliorate (still working on the amelioration), or that the world doesn't need a copy of you, or you don't want to mistreat the world in order to have the money to responsibly raise a child.
The choice is yours.
Recommended reading: "Selfish Shallow and Self-Absorbed - Sixteen Writers on the Decision Not to Have Kids", edited by Meghan Daum
If you make the decision to be childfree, we support you. You are brave.
(Yes we know that raising children responsibly takes bravery also, and we support you too.)