You witnessed its raise from $2 to $1200, and it makes you rich
> Please give me the source
you never learnt why it is so successful.
> Please give me the source.
I don't understand what you're trying to say so I'm not going to comment on the above.
don't need to trust core developers
> It is easy to destroy the bitcoin if I am the core developer.
This is not true. There isn't a single implementation of "bitcoin" as software. Even if the developers of the most popular bitcoin client added a change that people didn't agree with, it is very unlikely that they could get a majority of the network using it. The bitcoin network works by consensus.
MtGox or other services and exchanges are not bitcoin; please distinguish the two.