Yes - that's a huge problem, and one that will only hurt the children if you decide once you've had them that you really didn't want them after all. I think it seems like it would be safer, if you aren't sure you want them, to not have them, and only have them if you really truly want them. (Or?)
I agree, but then I don't, it really depends on the situation. We didn't plan our child, we never really talked about it beyond, "yeah it might be cool one day". To go by that logic, we simply would never had her because we were not sure. To have my daughter now, the life we have, the fun we have as a family makes it impossible to even think of life without her and makes us want more. She is hands down, the greatest surprise we ever received and I would go to the end of the earth for her. I can't know and feel that without having her though.
I wouldn't say "have a kid, try it out, see how it goes" to everyone. If you have mental issues, a drug problem or cant afford to feed yourself, or some other impediment I would not recommend having a child. However, if you are in a loving relationship are stable and are considering it, don't sway to the no side so quickly. You could be missing out on the greatest adventure of your life. You don't need all your ducks in a row, just a few of the primary ones.
That all said, I think some people have kids for the wrong reasons also. Kids are not a trophy, they are not something to shove in front of a tv until you need them so you can brag to friends about how awesome YOU are. If you are happy, kids will generally make you happier, they cant fix your issues and wont make you happy though.
I guess what I am saying is, don't jump to no right away just because you are undecided. Especially dont do it based on others experiences. We as people love to bitch. For every sob story a parent tells you there are 100 great moments that are left unshared, especially to a non parent. I dont know what it is, but some parents love to complain to non parents and tell them all the reasons to not have kids. Its like they are looking for sympathy or they want some sort of recognition for all the hard work they do. Maybe they want to hear the person say things like "oh man, that is rough, how do you handle that, I couldn't do it". The reality is, you don't know how you will feel about kids until you have them. You could have always wanted them, have them and be miserable. You could have never wanted them, have them and be happy and fulfilled. You don't know until you know.