OP, your post made me remember smth I read a while back. The now infamous Guantanamo bay military base in Cuba is on the land that was formally leased to the US government by the Cuban government in 1903.
Despite the revolution and hostilities, every year US sends a check to Fidel for the contractual amount. He puts it in his desk. Not once since 1960s has it been cashed.
Take what you want from this story. You can draw the line in the sand by never cashing. Or you can see it as a sign that your parents in some way feel it's their obligation to you, no matter what.
It may also be automated and they forgot about it. I have a citibank feature like that.
