For me it is first and foremost that I don't want children in my life. I won't have them, and I won't live with or date anyone who has them.
I love my nieces and nephews, and have always enjoyed their company. As a skateboard and snowboard instructor I've always enjoyed seeing kids learn new things and how excited they get.
But in my home, in my personal life, they simply aren't welcome.
The money, freedom, free time, etc, are all bonuses, but they are not the driving factor.
I want a calm, quiet, peaceful home. I want uninterrupted sleep. I do not want to spend any time cleaning up after someone else, or having to make my space child safe.
I also don't want to have to deal with other parents, teachers, or navigating the ever changing social landscape that young people seem so wrapped up in.
In the end, there isn't a single benefit I can see to having a child, and a near endless list of stresses I can just do without.
Finding the childfree reddit years ago was the first time I had found a community which supported this lifestyle, so when I moved to Lemmy joining this was an obvious choice.