Just about as much as I hate the obligatory "You are never the only one," "No," and "Why do these threads keep popping up?" posts beneath the OP.
While I don't support those threads, I understand the whole feeling of being what feels like the only person to think something in a particular social setting, be it a group of friends or a website with a very vocal popular opinion, as well as the fact that "Am I the only one...?" is a phrase expressing a particular feeling that might be a sort of exaggeration rather than truly feeling alone in your opinion, as well as a way of asking for a sort of agreement with the opinion or if they're particularly hopeful, an explanation of the popular opinion.
And yes, you did mislead me. You may feel smug now.