I don't play D&D because I want to buy items that give me +1 deflection, +1 natural armor, +1 enhancement armor, +1 enhancement shield, +1 luck, and boosts to my Dex. That stuff really REALLY bores me, especially as a GM because a ruleset that requires those items just causes me to spend pointless time picking out gear of appropriate value in order for an enemy to be a decent challenge.
I definitely don't want to have to include giants, nets, and NPCs with dispel magic in my 'fantasy spy mission' adventure, simply because one PC is not threatened by mortals. I was running 4e before, and got fed up with the way it let players stack tons of debuff effects on prominent enemies, so we switched to PF, and now it's the math that's beating me up.
I really think I'd rather just convert to a system where my intuition about how challenging something should be in a 'Hollywood physics' world is matched by the system. John McClane survives Die Hard because he's a scrappy hero, not because he was kitted up like a magic Christmas tree.