Long term a big difference would be your space station being isolated from everyone else. This avoids many bad incentives (like prisoners dilemma / tragedy of the commons).

For now, space is just a good training ground. It is not necessary to build isolated eco systems / livable environments on earth and doing so makes no sense financially. Space enthusiasm is a good tool to push R&D.

On an even longer scale it would certainly provide a diverse range of evolutionary benefits, but that would probably go a far bit off topic.