Definitely don't have four. Reuters Having kids is hard and getting harder around the world, according to a new report from analysts at Goldman Sachs.

That's because it's getting more expensive.

While basics like food and clothing are cheaper, the big-ticket items are pushing up the overall cost of raising children.

Parents in the US in particular are among the least optimistic that their children will be better off financially.

That isn't to say that the global population is about to collapse, but maybe consider a few of these costs before you decide to bring junior into the world.

And if you do want to have kids, keep this in mind. Expenses are considerably higher when you go from having one or two kids to adding that third one.

Sorry mom. Here's some data from Goldman's analysis: