My wife and i have always been very open communicators. After having a kid when people would ask us if we are enjoying parenthood we've always answered honest.
"It's the most work we have ever done in our life" (and I build startups!)... "We got no sleep last night, she woke up at 2 AM and wouldn't go back to bed."
And it is amazing to me the backlash we got. People who plan to have children were telling us "all I ever here is the bad stuff!" and essentially saying we should lie and say everything is perfect.
The fact is, having a child is the biggest life commitment you will ever make and if you and your significant other are not prepared, you're in for a bad time.
But at the same time I think this whole "you're not allowed to say anything bad about parenthood" is unhealthy.
This article talks about people who are willing to speak their truth about parenthood and I think overall that is a good thing.
Edit: If more people talked honestly about he burden of parenthood we'd maybe have less unwanted kids. We as a species are well past the point where we have to have 10 kids just to ensure the bloodline continues. Be honest with people about how difficult being a parent is. Some people like my wife and I will choose to do it anyway knowing exactly what we are getting into and other's won't. And that's OK.