The world would indeed be boring if we were all white? Our hearts beat like one another we are all the same, whether we are a shade lighter or darker than anyone else is irrelevant and not important, the question is can we live in peace on this planet that we all share together?
It is relevant because great harm has already happened. To say that it's not important also erases the need to address the ways in which our world is still very racist and doesn't ease suffering.