I hated Armageddon. I was 11 when it came out, I saw it with my friends, and we all thought it was painful.
I can't stand Michael Bay movies. The Rock was decent, but each one since has been a chaotic mess that is actually physically unpleasant, for me, to watch due to aggressively awful editing and camera work. I can handle the sheer stupidity, which frequently comes with the territory of summer blockbusters. But when I can't even tell what the hell is happening on screen, that right there is a deal breaker.
To top it off, the Transformers movie series features what may be the single least likable cast I've ever seen assembled for a professionally made feature film. Outside of John Turturro, I don't believe I've seen any of them in a good movie, so I don't know if the problem is just poor acting ability, poor screenwriting or direction or what... though since John Turturro is certainly capable of being likable, I'm definitely leaning toward bad direction or screenwriting, probably both. But I can't stand any of the characters in the Transformers series. Not the jerkass kid Sam whatever, who is the focus of the series for reasons I will never understand, not his equally vapid girlfriend, and especially not his terminally insufferable parents. I spent every minute of the first two films hoping they would die horribly.
I mean yeah, Armageddon was a wretched wreck of CGI explosions, but at least it had Bruce Willis. That... helped... kind of. Maybe. A little bit.
Fortunately, as I mentioned in another thread, the group of my friends that has in the past succeeded in guilting me into seeing the first two Transformers movies with them has only been able to muster up a collective "meh" for this third one.