What was the point in this movie?

Rating: 4/10 (16 October 2013)

After seeing Marvel rewrite its own version of its own comic strips into movies and doing a far much better job at it I was looking forward to this one, even though Iron Man 2 was a bit meh and confusing. After all it's Marvel, and the comics are written by Marvel, what could go wrong?...
Short answer: Everything in this movie.
So Stark gives away his home location on live TV telling all the bad guys where he lives and to come and get him. And that's precisely what they do. After turning his luxury home into powder his costume breaks down and so he now spends a good chunk of the movie trying to fix it with the aid of some kid fan.
Only we learn right at the end of the movie that it's not his only costume. He has not one, not two, but hundreds of them! Which leaves the question, why focus all his attention on fixing the one costume to fight the bad guys when he has hundreds at his disposal?
The answer is pretty apparent when the Iron Man army is easily torn apart like paper dolls. No wonder Stark was focusing all his attention on his original suit. These weren't Iron Man suits, these were Plastic Man suits.
And then what does he decide to do at the very end? He blows them all up! He has an operation done to remove the shrapnel from his chest, a contradiction to the Marvel comics where he was unable to have the shrapnel removed without it killing him, which is why he had the device in his chest to save his life in the first place!
His decision to give up being Iron Man so that he and his wife can live a normal life is almost immediately set in full reverse when he goes back to the rubble of his home to pick up bits for building a new costume and states at the end "you can take away my suits, you can take away my home, but there's one thing you can never take away from me - I am Iron Man."
Most confusing and pointless ending ever. Please don't make any more Marvel... please.