When I was younger, I had completely different things I was thankful for during the Thanksgiving time. I'm not sure if it's a mix of cynicism or the fact that the 'truth' about Thanksgiving has been exposed.
John Lennon once said "We're bigger than Jesus," which enraged thousands Christians and even the Ku Klux Klan. Today, if I was to say that pizza is an overrated food item, I would have tomatoes thrown at me until the end of time.
The phrase "please leave me alone" will always be interpreted as spiteful and negative. But people do not understand that the constant annoyances of other people's concerns occurs so frequently throughout the day.