Would stubborn parents be an excuse?
I sympathize with you.
But this is WORLDS. What other chance in the near future (or EVER) will you have to meet and interact with 300+ people of all different kinds of background from all around the world who share a common interest with you for a few days without leaving the country? This is more than just having to travel so you can solve a cube... This is an incredible experience that caters directly to your interests, and you'd be hard pressed to find a more grand experience with the benefits that the World Championships will have.
What's cool is that I'm being serious.