I always knew I didn’t want kids

I remember even as a teenager I never wanted to have kids. I have been mentally ill my entire life so I never even thought about bringing kid into my life when I suffer so much. At that time I didn’t even know what anti natalist was, nor did I knew what childfree meant. I just knew I am suffering therefore I cant even think of those things, so it baffles me when people who suffer in life bring kids.