When do kids cause the least amount of stress? (As babies? Toddlers? Elementary school age? High school age?)

When they grow up and move out of the State.

When i find out, I'll let you know.

OK, OK.

As a parent, you're always going to worry about your kids to some degree. The focus of your worries is going to change as they get older. If you've done a halfway decent job of raising them, you should be able to breath fairly easy by the time they turn 21. That's just a generalization. Your results may vary.

When they're about six months old....they give you a brief moment of calm again when they're about nine and ten.

so far for me, babies all the way!

I think that elementary is the lesser of the stress levels. I am step mom to a 22 year old, and she is such a good girl, but I worried most about her in her teens. I have a 12 year old, and the new issues arising make me batty with him. I loved every aspect of him in elementary..easy peasy. Now, Jr. High makes me batty.

Now that I have gone through all stages till 18, I'd say about 3-6 months old. For one, they are finally sleeping through the night. I do know that the worse stage is a female teen PMSing! That is horrible. And I have 2 teen girls! My hubby and I always joke at that time of the month, we are moving out into a tent. Screw that idea, the girls are going to the tent and we get the house! I also have realized that raising teen girls are sosoooo much harder than teen boys! My hubby and I screwed up a bit and had our girls only 12 months apart. So the first year was living in hell on earth! Once the kid starts to talk they never shut up!