I'm going to answer this honestly, as a woman. Yes, we are EXTREMELY happy with our choice, and we have never questioned it. We made the decision after having looked into all of the factors involved, and decided to remain childfree was the lifestyle for us. We still love the children in our families and our friends children, but we are perfectly content with just us. Every once in a while my biological urge will have me wondering what a child of ours would be like, but do not mistake that curiosity for regret. It's fun to wonder, but that doesn't mean that we aren't confident in our decision. He has recently gotten a vasectomy since I've been doctor hunting for the better part of two decades to find anyone willing to give me a ligation to no avail, and long term hormonal birth control use is not without its downsides. Deciding to be childfree is not a decision to make lightly, either. It takes real knowledge of yourselves and good communication to reach that decision in a relationship. I was lucky enough to find someone who not only respects my decision, but who also wanted to remain childfree. Whether you're doing it because of the abismal state of the word or because you just don't feel like you could handle the stress well enough to raise children into becoming decent adults, it doesn't matter; if it's right for you, it's right for you. Never let anyone try to make your mind up either way about this, because it is a life long decision.
If you ever have any questions or want to just talk it out, feel free to discuss it with a trusted friend, or even to contact me. It's a hard decision, and sometimes having a non-judgemental party to just rant it out to makes all the difference in the world.