You gotta be nuts to think Ender's Game sucked. Either that or someone spoiled the book in advance for you. The revelation toward the end (won't spoil it hehe) was a "holy shit" moment on par with when Neo woke in the real world in Matrix 1, or when we found out that Soilent Green is PEOPLE.
Millie, and whoever else, if you didn't read it, do so. It's must read sci-fi.