I could argue that I live a better life without children. Others could easily argue the opposite, though.
My wife and I made the decision not to have children a long time ago, and we don't regret it in the slightest. What we have found, though, is that our friends and co-workers continue to have on-going "problems" with their children.
Issues of sickness, parent-teacher and other school things, dealing with unruliness or other behavioral problems, the on-going costs of raising kids, finding daycare, time off for activities - or simply picking the kids up from school, having to get a more expensive (larger) car(s) because of having a kid (or more kids)...it just goes on and on, all the way through (and sometimes beyond) high school graduation and college. If the parents are lucky, the kid goes to college and moves away. But increasingly, that doesn't seem to be the case - we hear and see about many parents (friends, co-workers, and strangers) whose children stay at home, without a job. So they (the parents) continue to complain about that, wondering when their children will leave, or get a better education, or whatever.
It's gets tiresome after a while; it is also tiresome that you want to tell them about something you bought, or something you're doing or going to do (a vacation, higher education, a new job opportunity, or a business venture) - but you sometimes have to hold back, because you know that you're just throwing it in their faces that "this is what I have, and you don't because you're dealing with your kids".
...then there's the relief we've seen on our friend's and co-worker's faces when they (finally) say that their children have bought a house, and have moved out, or have a job, after graduating college or high-school or whatever; they look like a burden has been lifted from them (while at the same time a bit sad - I imagine because of their kids no longer being around - I can empathize with that).
It seems like children are a double-edged sword. Are there good times and good (great!) experiences to be had with children? Surely! I'll never know the thrill or excitement of teaching my child how to ride a bike, or use powertools, or how to code, or any number of other experiences (and there would be many). But with that loss, I also won't ever know the debt and trials children put parents through, the loss of time and energy, the fear when they don't come home on time.
I and my wife have chosen this; to say our life is abnormal because we came to that decision based on many discussions is to devalue our ability to make our own adult and independent decisions. Similarly, I can't honestly criticise someone for having children. All I do ask is to quit complaining about the decision(s) you made. Because that is the adult thing to do.