If history is any indication, separate cultures tend to end up fighting each other if they want the same resource. Whether space colonies end up in such a situation is unclear, but seems unlikely. There are also religious reasons one culture would try to convert or remove another, and that’s a bigger worry. Hopefully establishing hundreds or thousands of colonies would mitigate this risk, since diversity tends to help to stave off extinction.
If history is any indication, separate cultures tend to end up fighting each other if they want the same resource. Whether space colonies end up in such a situation is unclear, but seems unlikely. There are also religious reasons one culture would try to convert or remove another, and that’s a bigger worry. Hopefully establishing hundreds or thousands of colonies would mitigate this risk, since diversity tends to help to stave off extinction.