well i have the same feelings as you now.
Though i know that almost all in bets in Micro are''nt bluff, i still want and my brain always tell me to call (just to see his cards, or just to hope his bluffs).
But recently i check my river call in PT4, i know the truth that hardly ever villains bluff me on Big River bets.
atm i still can't always fold river with KK facing AA despite of my gut.
Maybe we should write down it on paper and stick in front of your laptop
)