It may be your "fault" but this is a design flaw. There should have been a confirmation screen.
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Since almost every application on the planet asks you "are you sure" with some sort of confirmation, especially when it is something with long-term consequences. Not accounting for human nature, is a design flaw. Have you never, ever, not even once clicked something and then went "oh no"? If the answer is yes, then you should understand. If the answer is no, then you are either lying or your turn is coming.