Yesterday: As I am getting ready to pay for my breakfast ($8, some ¢) at my usual diner, a stranger has the waitress take my bill from under my nose and proceeds to pay both his and my bills.
Upon seeing my complete surprise, the native-Bostonian waitress says, "just pay it forward, sweetie".
In the spirit of the event, I tipped her, the Augies Baristas, and the bartender at the grill where I usually get my lunch on Thursdays more generously than usual.
Telling my grandpa about this, he says "Why did he do that? What were his motives? He could have been Jack the Ripper! You never know in this day and age."
Since we are well enough off such that I do not need such charity, Grandpa told me to politely refuse next time.
Is he off base with either his recommended action or his paranoia?
OR
Would I be the fool to not accept free stuff?
Upon seeing my complete surprise, the native-Bostonian waitress says, "just pay it forward, sweetie".
In the spirit of the event, I tipped her, the Augies Baristas, and the bartender at the grill where I usually get my lunch on Thursdays more generously than usual.
Telling my grandpa about this, he says "Why did he do that? What were his motives? He could have been Jack the Ripper! You never know in this day and age."

Since we are well enough off such that I do not need such charity, Grandpa told me to politely refuse next time.
Is he off base with either his recommended action or his paranoia?
OR
Would I be the fool to not accept free stuff?