[papilindo]

Old computer programmer saying: "garbage in, garbage out", which you fell victim to. Here's why:

"now, since i have the nuts with a set of queens, he must have a flush draw to go with any sets, or it would be insane to call all in on just a midle set at best"

Your analysis above is flawed in that you TOTALLY precluded him from having a lesser set than you. You're going to honestly tell me you've never heard of someone going all in with a lesser set (or even trips)? As someone else said, you gave him only ONE possibility without even a CHANCE, however slight, that he may have another holding. This is the garbage in part. Now the river bet to you, and given the relatively small amount, had you put in reasonable info, you could have made the correct call by assuming he MAY have had a lower set. Instead, due to the "garbage" you put in, the "garbage" (wrong decision) came out.