But if everything becomes as the Federation, then what is unique about the Federation? Why is it not possible that only one thing evolved on a planet? Especially in the case of the Romulans who were just Vulcans leaving their homeworld. I guess my point is that part of what makes the Federation is that it illustrates how diversity can be a boon. If everyone is diverse, though, then that point is lost, isn't it? I'm not just talking about members of the Federation (in Enterprise, the Andorians aren't part of the Federation, as there is no Federation, and at times are at odds with the humans, and at the throat of the Vulcans, so they qualify as an enemy). Also, if you make all other races in the Federation, like humans, that also detracts from diversity too, doesn't it? If you had a choice of a federation full of peopel who's individual groups were all diverse and of different thoughts from others in the group, or a Federation who some of it's individual groups were diverse and who's thoughts differ from one anothers, and some who come from a group of people people who are all very similar to eachother and who's thoughts may be similar as well. Is not the second group more 'diverse' than the first, because they contain a group who has an understanding of life that is different from those who have lived in such wide open boundaries of 'acceptability'?
Personally I find it more realistic to think that there may be races out there who aren't diverse in and of themselves. Aren't we always told of species that are so delicate that they can only live in one area (thinking of creatures like the spotted owl, etc.)? If that is the case, then why can't it be so for a higher lifeform? Why must every race be as humanity?