Have you noticed how the bored cashiers shorten the message to say something like, “Would you like to give $1 to prostate cancer?” No, I don’t support cancer, thank you. Now, if you want some money to fight cancer, that’s a different story. Or money for research to get rid of it, then yes, I’m with you.
By the way: If you’re writing a post about cancer, even a silly one, DO NOT google “cancer” to find an image. Terrifying stuff.