I think it's important to share the difficult / hard experiences of having kids as much as the good ones. I've noticed that there is a huge bias towards only sharing the good moments and white-washing all of the bad as something you can "laugh about later." To be frank, not enough people were honest with me about what it would be like having kids before I had them - and I was incredibly upset when I realized that (several years into being a parent).
I now make it a point to be honest with people when they ask "Should we have kids?" and tell them about how hard it can be, etc. Most importantly, I tell people that they shouldn't have kids unless they would still want to do it if their experience doesn't land in the middle of the bell curve. We tend to romanticize the decision, and expect that everything "just gets even better" with kids. There are all sorts of ways your experience can be less than ideal. Unless you're evaluating your decision with those potential outcomes in mind, you're doing yourself, your partner, and even your future children a disservice.