[andyfox]

There's nothing wrong with suspecting an opponent has hand X and then changing one's supposition based on subsequent information. But here your opponent confirmed your suspicion. With you raising pre-flop and then raising the flop, your initial read for this tight player made sense. He'd expect you to bet your A-K (the most common hand opponent put you on when you raise preflop) again on the turn, so he'd continue to play possum, trying to trap the first limper.

As to your first question, I think we tend to subconsciously get entitlement disease when we have premium hands and improve on the flop. Maybe something like: "I have A-K. Cool! Ooh, and lookie here, I now have TPTK. This baby's mine." Maybe that somehow colors our objectivity when the turn and river are apparent blanks. I dunno. I think I see that type of thing more when somebody has A-A, K-K or A-K than with other hands that end up being TPTK. And as to your second question, no, you're not the only one who does this.