As a kid I thought he was dead boring. Most of the other heroes had cool powers and those that did not like Batman were always in real physical danger. Iron Man was a guy in an "Invincible" robot suit.
And his comic had absolutely no female characters of interest. And he had a moustache. And Iron Man was the favourite hero of this boy I became friends with because we both liked comics, so I think I hated him even more just to be playfully antagonistic (setting life-long precedents).
Oh as an adult Iron Man just seemed like an anti-superhuman fascist time-bomb ticking away, which from what I have gleaned is what happen in that Civil War storyline. So I stand validated.
Besides I just wanted to give your relentless toy optimism a hard time and Iron Man was the target simply leering at me from signature line.