Carrying Compacity
Some people say that our planet has already reached the max carrying compacity but I say we still got another 2 billion people until we reach the carrying compacity. The earth could take care of tons of people but its all about how much food is left, if there's still any shelter, is there water left on earth, and if theres still any enviormental conditions left. The carrying compacity is about 9-10 billion people but some people would beg to differ cause because they say that earth won't have a carying compacity for the human race. China already started to make sure that everyone could only have two babies and if they have more then one of them have to go. Carrying capacity is defined as the "maximum population size that an environment can sustain indefinitely." For most species, there are four variables that factor into calculating carrying capacity: food availability, water supply, living space, and environmental conditions. Even with this relatively basic quartet, carrying capacity can be rather tricky to determine. It's simplest to compute when a clear limiting factor is realized. In the case of a population on a small, isolated island, the limiting factor might be space. For a species dwelling in a desert, it might be water. I personally wouldn't want this to happen but if it does i wouldn't argue with it. There is still oil left but there's only about 30 years left of it so that's how you know when there's tons of humans. We still gtot food and all those type of things but what happens when there's alot of humans; more humans, less food. Same with water if tons or more humans then less fresh water and 50% of our bodies are made out of water. So basically no there shouldn't be anything stopping from reproducing but i'm not sure if there's amount that we can reproduce. As long as your parents have children but enough so if times get hard they could still want to take care of you.In the case of humans, the arithmetic is much, much more complicated. Our meta-population is diverse, widespread, and affected by a large multitude of unique variables including technological advancement, disease, and energy consumption. Plus, our species has the ability to deny our reproductive instincts and procreate without producing offspring. Brilliant thinkers can estimate human carrying capacity all they want, but any prediction is subject to the whims of time and the inherent difficulty to grasp the sheer complexities of the variables. No they're shouldn't be a limit to how much children you need to have but you should make sure that you have the money to take care of them.