Harry Potter...

...is an absolute moron!

Really, he's a bonehead.

It's a miracle that he survived the books, because he sure as hell worked hard enough to avoid it!

Just look at that whole episode in the Ministry of Magic.

He gets a vision telling him Sirius is in trouble.

A smart person would figure that it's most likely a trap, and just double check with the magical mirror to see that everything is fine.

A slightly less intelligent person would not realize that it is a trap, but would still check with the mirror to see if Sirius is okay.

An even less intelligent person would not realize it is a trap but alert Snape, so that he can put the entire Order of the Phoenix on the job.

Now, a stupid person would try to break into the headmistress' office and attempt to use the floo-network to contact Sirius.

A complete and utter arch-idiot, the stupidity of which is unparalleled, would try the floo thingy, fail, alert Snape, yet still run off to the Ministry of Magic to try and stop Voldemort.

Now, let's say it hadn't been a trap, then Harry and his gang would have been faced with a reborn Voldemort in all his glory, as well as a horde of death-eaters. Surely, even if it wasn't a trap, it would still be a fucking trap, because Voldemort would still be there to catch Harry!

My god, the idiocy of it all! Hadn't fate been favouring him all along, he would be dead in a ditch by the second book!