I don't think anyone can look at the incredible diversity of humans we have now and say they're all the same species, while looking at birds or other animals and say they deserve to all be different species. One of those trains of thought are wrong, and humans seem to be the outlier.

That said, I don't want to be the one to have to tell people they're another race. I think calling all humans the same race simplifies a lot of life, and there's no reason we can't treat ourselves differently.

I feel like you're conflating race/ethnicity with species when the two are completely separate concepts. There's a great amount of diversity between dog breeds, including wolves, but little disagreement that they are the same species. Variation between members of a certain species is expected