Your question is asking if we were happy with our choice to not have kids. We never wanted our own children. We know it's a big, tough, messy, wonderful ecstatically satisying job that has no limits to both its rewards and troubles.
My JW friends who felt like the WT made them "choose" not to have kids now regret it. I feel sorry for them. A lot of other JWs just ignored the WT advice and had children. A number of them, while they would never say they regret it, tell us often that we were smart not to have them. I think they are just hassled with money and the WT life that doesn't give them the time to be parents the way they would like to. But that's something else they'll never admit either. I really don't care what other people think, since we're both pretty content.
In our case, it was a choice. We told other people it was because of the paradise, etc, but that was just to come off as better than others and to get people off our backs about us having kids. They finally gave up, and we've been harassment-free ever since.
When a JW friend would tell me they wanted to have kids, I would full on support them in words, lots of babysitting, presents, the whole works. I love kids. I just don't want them for myself. I also ask people WHY they want kids. The answers are very often about things they WANT, rather than what they'll be giving.
Having a child is the last selfish decision you'll ever make.
I'm glad there are so many people, JWs and others, who have kids. They make me laugh and fill my world with delight.
I congratulate all the hard-working parents out there - you have a very tough job. Better you than me.