What will it be like when we reach our carrying capacity?

Everything, including this earth, has a limit. When we reach that point—which I hope will never happen—there will be extremely few resources available to each person, including food, water, shelter, and other necessities. People will be unhappy because of hunger, among other things, and conflicts over access to these resources may arise.

The maximum number of people that the earth can support is 10 billion, and any more than that will result in a crowded, chaotic world where people will most likely fight for food, water, and shelter due to a lack of available space. The world's population is currently at 7 billion, so it won't reach 10 billion until perhaps 2100 AD. However, if humans are going to colonize our neighboring planet Mars, we will be able to bring humans there and establish a new home. I hope this answers your question.

When a population reaches its carrying capacity, resources become scarce, competition for those resources increases, and growth slows or stabilizes. This can lead to decreased fertility rates, increased mortality rates, and potential conflicts over resources.