I think the Civil War is one of the best written storylines in Skyrim. There's good evidence on both sides that neither are completely right or wrong, so it all comes down to what you think is best. Also, I don't care if Stormcloaks are pro-Nord. If they allow any race to join them, that's their problem.
Agreed. Strange enough, the Stormcloaks let me join them despite playing as a High Elf. I remember Galmar questioning that too, "Why's an Elf want to fight for Skyrim?" well, I just felt like I wanted Skyrim to be ruled on their own instead of by the Empire or something like that.