Hell no to kids. I want to enjoy my life separate from the drudgery of diapers and teenage angst, thank you very much. There exists an almost sudden change of personality when a child enters the picture. Many of my friends who have 1-2 kids bore me. Not all - but many - lose their sense of personality and individuality. All of a sudden their happiness seems more forced. Women especially are notorious about not being able to relate to single or childless people without bringing up their damn seed-spawn. Of course I would go further and say that these people are typically vain and boring in the first place. Having a child is just one way many people try to redeem their automoton lifestyle.
The remark that you need to have children to fully comprehend love or life is just something these people say to try to justify their summative stress. It's also incredibly obnoxious because I know for certain that I've cared for my siblings throughout trials and tribulations, too. The difference is I can unplug from the stress by choice.
Just my observation. I'm sure someone with kids will try to object to my remark. Go ahead. You know it to be true.