Tony Stark, we all know Tony Fucking Stark. You've seen the cover shots and the youtube vids that hit a million view after only eight hours; the drinking, women, cars; flash and bang.
It's a shiny suit, just another shiny Tony toy. Built it in a cave, well, genius, right? Yeah fine, but our Tony. We all know Tony, he's a bombastic failure, really, just another hot mess.
So what if he's the only one to do it? In a cave. With some scraps.
Don't think too hard about it. You'll only scare yourself.