I don't know who you are, obviously, but just based on your question I would posit that you're a white male. I think you cannot overestimate the power that readers, especially younger readers, seeing a heroic character that resembles themselves, can have. For white guys like me, that's easy--there are hundreds of them. Not so for almost any other demographic you might choose to name. That's why, I think, people are supportive and even delicate with any character of a particular race or orientation or background. It's a diverse world out there, and any time we can reflect that diversity in a meaningful way, it's worth doing.