In my experience, though, this can lead to some serious "arms-race" issues where the PCs and DM try to outdo each other with outlandish and cheesy tricks and builds. IMHO, this can ruin the atmosphere of a campaign quite quickly...though of course, some groups do enjoy this type of play style, seeing it as a strategic challenge.
Not so much. Now we have an unspoken truce, as it's widely regarded that I hold the nukes in such a war. In a way, it's the MAD defense. Breaking a character, just ruins the fun of the game. If there's no way to lose, there's no challenge.
Life is a gamble, roll the dice. If your life is like cards, rig the deck.
"Boy, sure would be nice if we had some grenades, don'tchya think?" -Jayne Greatest number of kills In Valhalla Round 1 with Hsams Goht