As you seem curious about the opinion of others I suggest reading research literature on the topic as it is probably better structured than a list of anecdotes from complete strangers. That being said in here at least you can dig deeper by asking questions back.

Anyway there is a field called the science of happiness that aggregates research in psychology, cognitive science, behavior science, economy, political economy, etc on what makes most people happy. Within this there are papers on relationships, family and raising kids. I warmly suggest reading on the topic. Last time I did read on it, which was a bit more than 5 years ago, one could roughly summarize that raising children brings for most people higher highs and lower lows. If your kid brings you a beautiful drawing from school, no matter how “ugly” it might look, you will be so proud it will brighten your day. On the other hand if they break their leg while cycling, you will feel even worst that if you broke your own leg. So… on average people feel about as happy with and without kids BUT the way they feel can be more intense.

I warmly recommend https://ggsc.berkeley.edu and https://www.drlauriesantos.com/happiness-lab-with-dr-laurie-santos-podcast to discover more on the topic. Specifically in your case https://greatergood.berkeley.edu/parenting_family