I wouldn't publicly admit to knowing that. You just:

A) Admitted that you've joined one of these sites for the express purpose of obtaining an illicit copy of a game (regardless of whether they had the file, that you know they didn't shows that you searched, which shows intent)

B) Admitted that you are willing to knowingly pay for pirated media (really, at that point, why not buy it legitimately? Sure, it's cheaper, but you're now tying your name to the transaction)

C) Admitted to having fallen for the scam. Multiple times. (You did say most, which implies that you have experience with multiple for-pay warez sites)