In response to your book:
1. Harry has a very good reason to whine -- his parents were murdered, he's constantly humiliated, so many people hate him, his favorite people are murdered, his scar always hurts, he has no guardians, everyone he loves is dying or injured, he has an incredible burden for being so young, he lived in a cupboard, and he never felt love for 10 years -- there's many reasons for him to whine, and he only whines about few of them.
2. Every character has had a purpose. Name a character and I will tell you what role they played in helping all of humanity.
3. Emma Watson. Tom Felton. The list goes on and on, dear.
4. Harry Potter came before Twilight -- so I'd have to say that it was actually Twilight who copied Harry Potter.
5. JK Rowling wrote a book called 'The Vacancy". Please, do your research before attempting to feed us lies. Also, Rowling has written essays upon essays about Harry Potter, and Harry Potter has over twice as much material as Twilight.
6. "Happiness can be found even in the darkest of times, if one only remembers to turn on the light."
"It does not do to dwell on dreams and forget to live."
"It is the unknown we fear in death and darkness, nothing more."
I could keep listing quotes, and I will, if you ask.
7. It's not allowing me to see #7, I'm sorry.