Have you read the book Better Never to Have Been: The Harms of coming into Existence, by modern philosopher David Benetar?
In the book he discusses a concept known as assymetry. Basically, if a potential human life is not brought into this world, they will be deprived of both pain and pleasure.
Benetar argues that the absence of happiness is inherently neutral, but that the absence of suffering is a universal positive.
Therefore, by never being born, you would be spared of the unnecessary suffering that is basal to life, so the loss of potential happiness (enjoyment is never guarenteed in life) is worth the benefit if you view the problem through the lense of negative utilitarianism.
From both a philosophical and personal perspective, I know that I should have never been born. Yes, I've had some good times, but I do not think they could ever outweigh the tragic or mundane events that have composed the majority of my life.
For every positive memory, I have about 20 horribly scarring ones to compensate for it, a constant reminder that I am damaged beyond repair. When people tell me that the majority of individuals believe that life is worth it, regardless of the amount of suffering one endures, I wonder how much time they've actually spent experiencing severe pain, abuse, sickness, poverty, etc.
If I was never born, I would not have to know the humiliation of being disabled and treated like a burden, nor would I ever have to comprehend how it feels to be in agonising pain everyday.
Life is truly just a Russian roulette. You could end up being privledged and oblivious to all the dangers lurking around every corner, or you could end up in such a state that you have to contemplate your own death in order to get any semblance of relief. This is why I am antinatalist and would never bring another human into this world.