I can think of several bad/wrong reasons to have a child, but no wrong reasons to be cf.
So many childfree people get asked for their reason to be cf, and those reasons are often critizised.
But, honestly, I can't think og any "bad" reasons for not having a child. You don't even need any reason - life just turned out that way.
I can think of several HORRIBLE reasons people chose to breed.
I've heard of children being born for spare parts to be a donor for their sibling.
Pedophiles that breed to get access to kids.
Parents living through their kids, having a "do-over".
Trying to save a relationship.
And many more.
Why are Parents never asked to justify having kids, but childfree people have to justify being cf.