I think having kids is wrong.
The fact that you never know what is going to happen within the next few years of having a kid makes it irresponsible. If you are going to take risks you either need to have consent of the other people involved or it's your own welfare on the line and not anyone elses. If they get some debillitating disease, yeah you should be paying the price and not your kids because when he grows up and thinks, damn, i wish i was never born with this' you really ain't got no excuse. But parent's are too young and stupid to take this into account and what's worse is this complementary baby culture which people get sold into which you can probably thank marketing for.
Continuing with parent's being too young and that, i will argue not many will have had some real life experience behind their back. They won't know what it's like for their body to start breaking down and develop issues later on in life or perhaps the phase of knowing what it feels like when your quality of life collapses during the last stages of death. Your opinion may change depending on the circumstances. How can anyone be honest and say that you know what you're in for or what you are subjecting someone to?
You can't justify your desires for taking someone out of comfy nowhere and putting them in harms way. There is no necessity for it. 8 million kids don't get to see their 5th birthday every year and many millions more have some form of deficiency. How many people will you in slave to your fantasies of a bright and beautiful future when you can't promise it?
People who have kids make the fallacy of deciding for someone else whether a life is worth living based on their own subjective experience. Not to mention, financially having a kid can be devastating. Billions in social taxes, increased competition, global resources and need to build more infrastructure etc.
If you really want kids think about adoption. Less trivial and good deed.