It's fine not to want to be a parent, but is that what you've really come to realize? If you "REALLY want(ed) to have kids", how does seeing a few questionable parenting decisions change that? Not saying you are wrong in any way, but your conversion seems superficial and perhaps your original reasons for wanting children were equally poorly thought out.
It's not an overnight decision, yesterday was just the last straw.
Sociologically speaking, in my opinion, parenthood is just a "scene" one chooses to participate in or not. Since being a parent usually includes knowing other parents, due to a child's activities, it is just a "scene."
That's what I don't want to happen to me. I'm afraid I'd become a fake "professional" parent. I think there's something chemically that happens to your brain when you have a kid that makes you delusional. You really
believe that your child is perfect and can do no wrong. You truly
believe that you're smarter than everyone else without a child. Oh, and you're also an instant martyr because no one else can relate to how difficult your life is.
Because of course life is just super easy if you don't have a child simply because of that fact!