In all of this Iron Man was my guy from the 1st comic book appearance.
A mortal man albeit a genius. The suit morphed over time to what we saw in the avengers series. In all of that it was pretty well played out. D. Jr was the perfect Tony Stark. There were some real stretches in the plot's but hey, they had a flying camo'd aircraft carrier. That is a stretch in itself.
Suspending belief is fun. It's what makes those stories so interesting to so many people. I've been a fan of iron man, hulk (who admittedly almost has the same problem Superman does), Spidey is probably my favorite Marvel character. Batman and then Flash are my favorite DC characters.