Everyone doesn't "need" it. It'll just be nice. As you point out, most people don't "need" anything more than a tablet, and those aren't exactly known for their high levels of connectivity.

> It is dominant in the market where USB falls short, that's what matters.

It isn't dominant in the market yet, and that's my entire point. When it is: cool. I don't have much argument against it (aside from the dongle-hell I'll be living in). But right now, I don't own a device with any version of Thunderbolt, even with several new laptops around.