I have been lucky enough to be able to work and live in several countries around the world. One thing in common I noticed in all these places is that guys and girls don't have time and don't want to commit to a stable long relation. They invest pretty much themselves and their time in their career, traveling , parties, dogs, cats and bitcoins :) ! The mantra is to get rich and retire at 40 years old! Travel the world…
I think having kids is scientifically proven to make you unhappy and greatly increase your stress levels. It’s no wonder people just put off having kids until they can, or pass on having them altogether.
The people who are unhappy with kids are the people who are unhappy, depressed and bitter to begin with, lacking all empathy. You have to be a pretty self-absorbed individual to not love the innocence and charm of children.
Every person I know with a family loves their children to death and are very content and happy. Happiness consists in pursuing the ultimate unchanging good and increasing in virtue, nothing passing in this life can give you ultimate everlasting happiness. It is a philosophical, metaphysical and theological question, not a question of children, free-time or money. Children are a good thing, but they're not the ultimate object whereby one becomes happy.